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release tab down to secure in position. To remove the guide, gently 

push up on the release tab and slide the assembly away from the 

trimmer. Adjust the trimming length by pressing on the thumb lever 

and moving the comb forward or backward to the desired setting.

 

A Detachable Blade System

 enables you to quickly change from 

a standard-width blade for full grooming to a narrow-width blade 

for detail trimming around a mustache, goatee, or anywhere to 

define the hair line and clip any stray whiskers.
To remove attachment, simply pull top edge of blade away from 

body unit. To attach, align back tab of attachment head to cavity on 

the inner edge of trimmer unit and 

push down on top of blade.
Should blades become damaged 

or dull or if you want additional attachment heads for your 

trimmer, you may purchase them from Wahl. Be sure to ask for the 

following attachment with part number from our service and repair 

department (see last page for contact information):

The trimmer you purchased may not have all of these heads, but 

they will all work with your trimmer if you wish to purchase them. 

The vacuum may not capture trimmings as effectively with some of 

these heads. You may order additional heads online at 

grooming.wahl.com.

 

Self-Sharpening Blades

 are made to maintain 

their shape and sharpness for extended periods.

 

Blade Guard/Vac Attachment

 protects blade 

when storing and can also be used to vacuum 

up stray hairs after trimming.

SAVE THESE 

INSTRUCTIONS

For Household Use Only

LITHIUM-ION BATTERY 

REPLACEMENT, TRIMMER DISPOSAL 

AND RECYCLING:

• For battery replacement send the entire, intact trimmer unit to: 

Wahl Annex 3001 North Locust, P.O. Box 578, Sterling, IL 61081

• Do not attempt to remove the battery.  Lithium-Ion batteries can 

explode, catch fire, and/or cause burns if disassembled, damaged, 

or exposed to water or high temperatures.

• If you choose not to replace the battery, the entire, intact trimmer 

unit must be disposed. Do not attempt to remove the battery for 

disposal. Lithium-Ion batteries may be subject to local disposal 

regulations.  Many locations prohibit disposal in standard waste 

receptacles. Check your local laws and regulations.

• For recycling contact a government recycling agency, waste 

disposal service, retailer, or visit online recycling sources, such as 

www.batteryrecycling.com or www.rbrc.org.

RECHARGING

 The trimmer cannot be overcharged, so you may charge it as often 

as desired. However, periodic recharging of the trimmer, rather than 

continuous recharging, will prolong battery life.
Charge when trimmer seems to lose power or run slower. The 

charging LED will pulse while charging. LED will stay lit when 

charging is complete.
1.  This trimmer is conveniently designed for household use. It 

should be allowed to charge 90 minutes before first use.

2.  Remove the trimmer, recharging transformer and accessories 

from the packing material.

3.  Connect the transformer to the trimmer. BE SURE TRIMMER IS 

CARING FOR YOUR TRIMMER

OILING BLADES

For best results, put one or two drops of Wahl Clipper Oil on  

the blades only when necessary, or approximately once a month. 

Motor bearings are permanently lubricated—do not attempt to oil. 

When oiling your trimmer, hold the unit with the blades facing 

DOWN and squeeze one or two drops of oil onto the blades. Wipe 

off excess oil with soft cloth. 

NOTICE—DO NOT OVER OIL!

 

Excessive oiling or application of liquids will cause damage if 

allowed to seep back into motor. 

BLADE CARE

Trimmer blades have 

precision-hardened, ground 

and lapped cutting teeth. 

Blades should be handled 

carefully and never bumped 

or used to cut dirty or 

abrasive material. Clean with 

the included brush.

CLEANING/

STORAGE

To Clean Hair Collection 

Chamber:

 Holding the unit 

upright, slide the collection 

chamber out. With the hair 

chamber lid open, tip the 

chamber up, and gently 

brush or rinse the trimmings 

from both the chamber and 

the screen. Should the filter 

become detached, it can be 

easily snapped back into 

place. Be sure components 

TRIMMING AND EDGING YOUR 

BEARD

The following are suggested trimming steps and trimmer positions. 

You may find different procedures work better for you.
1.  Comb your beard in the direction that it grows to help reveal 

stray hairs that may be longer than the others.

2.  Attach the 6-position trimming guide to trim and taper your 

beard. Begin with the guide set at a long trimming length.  

Trim toward your chin in smooth, 

overlapping strokes, following the 

lay of your beard. If you trim against 

the way your beard naturally lays, the 

trimmer will cut the hair much shorter 

than the marked length.
Improved capture of trimmings by the 

vacuum may be achieved by working upward from the base of 

your beard to the top. Some experimentation will help you find 

the best technique to maximize your style and the trimmer’s 

vacuum feature. 
Adjust the trimming guide to 

progressively shorter settings until you 

reach the desired length of beard. You 

may wish to set the trimming guide 

attachment to cut closer near the ear 

and down under the chin, changing to a longer setting toward 

the front of the face and point of your chin. When the trimming 

guide is removed, it will remain at its last length setting until 

you change it.

Always be sure the trimming guide is locked solidly into the 

desired position before you start to trim.
3.   To cut the outline of your beard, remove the trimming 

guide. Starting under your chin and working back toward 

your jawbone and ears, cut the outer perimeter of your beard 

underneath the jawbone. Continue the line all the way up to 

grooming.wahl.com

© 2017 Wahl Clipper Corporation 

Part No. 92550 

Printed in U.S.A.

For more information or Product Registration, visit 

grooming.wahl.com

5-YEAR LIMITED WARRANTY

Valid in U.S.A. Only

If your Wahl product fails to operate satisfactorily within five 

(5) years from the date of original purchase or receipt as a gift, 

Wahl will, at our option, repair or replace it and return it to you 

FREE OF CHARGE. 

Do not return this product to store where 

purchased.

 Products needing repair under this warranty should 

be returned with postage prepaid to:

  

Wahl Clipper Corp.

 

Attn: Repair Department

 

3001 Locust Street

 

Sterling, Illinois 61081

Include a note describing the defect and the date of original 

purchase or receipt as a gift (if in warranty). Products out of 

warranty will be repaired at our standard repair charges.

This warranty is void and no repair or replacement will be made 

under this warranty or otherwise if: (1) The product is modified 

in any manner or repaired by anyone other than Wahl Clipper 

Corporation or Wahl authorized service center. (2) The product 

has been used commercially or subjected to unreasonable use.

This warranty gives you specific legal rights and you may 

also have other rights which may vary from state to state. No 

other written express warranty is given. Any implied warranty, 

including any warranty of merchantability which may arise from 

purchase or use, is limited to the year period provided in this 

express warranty. Some states may not allow such limitation, 

so it may not apply to you. No responsibility is assumed for 

incidental or consequential damages of any type, or for the use 

of unauthorized attachments. Some states may not allow the 

exclusion or limitation of incidental or consequential damages, so 

the limitation or exclusion may not apply to you. Outside U.S.A., 

check with store for Wahl authorized distributor’s warranty.

IN THE “OFF - 0” POSITION WHEN CHARGING. 

4.  Plug the recharging transformer into any convenient electrical 

outlet at the correct voltage.

5.  When trimmer is low in power, it should be connected to the 

transformer and plugged into an outlet to assure maximum 

power is available when it is next used. This transformer  

is designed to completely charge the battery without 

overcharging.

6.  The battery will take approximately 90 minutes to charge.

7.  Insert only recharging transformer plug supplied by the 

manufacturer  into charger receptacle.

8. This is a rechargeable cord/cordless trimmer, it can be used 

with the cord so you can trim even if the charge is low. The 

trimmer cannot be overcharged, so you may charge it as often 

as desired. We recommend that the battery be “worked” or 

discharged by trimming without the cord and by not recharging 

after every use.

TROUBLESHOOTING

If your Trimmer does not seem to take a charge, check the 

following before returning it for repair:

1.  Check outlet to make sure it is working by plugging in another 

appliance.

2.  Make sure the outlet simply is not connected to a light switch 

which turns the power at the outlet off when lights are turned 

off.

3.  Be sure the trimmer is properly connected to the recharging 

transformer, all connections are secure and the switch on the 

trimmer is turned “OFF - 0.”

4.  If your electricity is connected to a master power switch, we 

suggest the trimmer be disconnected from the charger anytime 

the master switch is off.

5.  If trimmer does not run and it is completely charged, turn the 

unit “ON - I” and pinch or push the blades manually. (Oil may 

have dried out between the blades, so they may be temporarily 

stuck together.)

the ears and hairline.

4.  Accentuate your beard line by using 

the trimmer in a downward motion. 

Start at the line you’ve created and, 

working from the chin back toward the 

ears, trim the area right under your 

beard line. 

5.  Define the upper part of your beard using the same technique.

TRIMMING WITH ATTACHMENT 

COMBS

Your trimmer includes eight trimming attachments ranging from 

1/8" to 1" in length. These attachments are ideal for blending, 

tapering and defining beards, as well 

as for achieving a “close trim” stubble 

look around the face. To use the 

attachments, use the same techniques 

described for the 6-position guide, 

starting with a longer comb and 

working down to your desired length.

Lithium•Ion

Operating Instructions for the 

9870 Lithium Ion Trimmer

Instrucciones de Funcionamiento para 

la Recortadora 9870 de Litio Ion

Detachable Blade Trimmer

Recortadora con láminas 

desmontable

SERVICE AND REPAIR

If you have problems with your shaver, send it prepaid  

with a note explaining the problem to:
 

Wahl Clipper Corporation       

 

Attn: Repair Department 

 

3001 Locust Street 

 

Sterling, IL 61081 

 

Telephone (800) 767-9245

For products purchased outside the United States, contact  your distributor.

If for any reason within 60 days of purchase of your Wahl® 

trimmer you are not satisfied with your trimmer and would like a 

refund, just return your trimmer, together with the sales receipt, 

to the retailer from whom you purchased it.  Wahl will reimburse 

all retailers who accept trimmers within 60 days of purchase.  If 

you have any questions regarding this money-back guarantee, 

please call 1-800-767-9245 in the United States.

60 Day Money Back Guarantee!

SPECIAL FEATURES:

Your trimmer has been designed with several advanced features 

to help you get perfect results every time you trim. Your trimmer 

may be used to neatly trim goatees, beards, mustaches, neckline, 

sideburns around the ears and eyebrows, or anywhere you may 

need grooming. It also makes a great all-around family trimmer for 

mini haircuts and touch ups between trips to the barber or to clean 

up the shape of the neck.

 

A Self-Contained Vacuum System

 captures virtually all the facial 

hair as it is cut. The trimmings are vacuumed into an 

easy-to-empty collection chamber. Trimmings 

are filtered from the air as it passes through 

the trimmer. Any trimmings which may fall 

into your sink or onto your countertop can 

also be vacuumed up by the trimmer 

with the blade guard/vac attachement.
Should you need a replacement hair 

chamber, you may purchase one from Wahl. 

Contact our service and repair department and ask 

for part number #88252 (see last page for 

contact information):

 

A Multi-Position Hair-Chute

 allows you to 

adjust the vacuum stream to get the best results 

for your beard.

 

A 6-Position Trimming Guide

 makes 

achieving a consistent trim easy every time.  

The guide can be removed (providing a seventh 

cutting position) and reattached without 

changing the preset cutting length, so once 

you have found the perfect length, there’s 

no guesswork in achieving it every trim. The 

trimming guide is a two-piece assembly, 

consisting of a base and a comb. It should not 

be disassembled. To attach the guide, simply 

slide it on at a slight angle and press the 

Charging 

Light

Intake Port

On/Off Switch

Collection 

Chamber

Exhaust 

Ports

are completely dry before 

replacing in trimmer body.

Alternate Method to Empty 

Hair Collection Chamber:

 

Pop open the collection 

chamber door, and dump 

trimmings into waste basket. 

Whisk away any remaining 

trimmings with cleaning 

brush.

Before storing your trimmer, 

use the cleaning brush to 

whisk any trimmings from 

the unit and the blades. 

For units with a soft-touch 

grip, use a damp cloth to 

wipe down the body of the 

trimmer. Store unit in such 

a manner so that blades are 

protected from damage.

When the trimmer is not 

in use, the trimmer blade guard attachment should be in place to 

protect the blades.

This appliance should be stored in a manner where it is not 

subjected to Crushing, Heating above 100°C (212°F), or 

Incineration.

CAUTION!

When hair chamber is removed vacuum fan 

is exposed. To reduce the risk of injury do not 

place or insert any object including fingers 

into fan. Always have vacuum chamber in 

place when using trimmer.

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#1  Stubble Length   (2 mm)
#2  Short  

(4 mm)

#3  Medium Short   (6 mm)
#4  Medium  

(8 mm)

#5  Medium Long   (10 mm)
#6  Long  

(12 mm)

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#59307

#59300

Detailer

Dual 

Shaver

Detail 

Shaver

#59301

#59302

#59303

Trimmer

T-Blade

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