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STARTING/STOPPING INSTRUCTIONS

12

WARNING:

Avoid accidental starting. Be in

the starting position whenever pulling the
starting rope. To avoid serious personal
injury, the operator and unit must be in a 
stable position while starting.

STARTING INSTRUCTIONS

Cold Start - First Start of the Day or Engine Ran Out
of Fuel

WARNING:

Operate this unit only in a well

ventilated area outdoors. Carbon monoxide
exhaust fumes can be lethal in a confined
area.

1. Check oil level in crankcase. See 

Checking the Oil

Level

Pg. 19.

2. Fill the fuel tank with fresh, clean, unleaded gasoline

(see page 11).

3. Put the Start/Stop Engine Control in the 

START

[

I

]

position (Fig. 8).

Fig. 8

Fig. 9

Fig. 10

4. Place the choke lever in the 

FULL 

choke (

A

position (Fig. 9).

NOTE:

Slide the choke lever directly above the 
appropriate symbol on air filter cover decal 
(Fig. 9).

5. Fully press and release the primer bulb slowly 7

times. Gasoline should be felt and visible in the bulb
(Fig. 9). If gasoline has not entered the bulb, press
three more times, or until it does.

11. Release the throttle control to the idle position and

begin operation. 

NOTE:

If the engine does not start using these 
procedures, repeat steps 5 through 11 using
TWO (2) pulls in the 

FULL 

choke (

A

) position.

Engine Re-Start - Warm Engine With Fuel

1. Put the Start/Stop Engine Control in the 

START

[

I

]

position (Fig. 8).

2. Move the choke lever to the 

PARTIAL

(

B

) position

(Fig. 9).

3. Fully press and release the primer bulb slowly 7

times. Gasoline should be felt and visible in the bulb
(Fig. 9). If gasoline has not entered the bulb, press
three more times, or until it does.

4. Squeeze the throttle control to the wide open 

(full throttle) position.

5. With the unit in the starting position (Fig. 10), pull the

starter rope briskly until the engine starts.

6. When the engine starts, move the choke lever to the

RUN

(

C

position, and run at full throttle for 30 

seconds. 

NOTE:

If the engine does not start using the 

Engine 

Re-start

procedures, revert to the 

Cold Start

procedures.

NOTE:

4-stroke engines, like cars, are able to start in 
the idle position. As an alternate method, you
may want to start your unit in the idle position
when the unit is warm. With the Start/Stop
control in the 

START

position, pull the starter

rope briskly. When the engine starts, run at full
throttle for 30 seconds. If the unit fails to start or
dies, revert to the 

Engine Re-Start

proceedure.

STOPPING INSTRUCTIONS

1. Release your hand from the throttle control (Fig. 10).

Allow the engine to idle.

2. To stop the engine, put the Start/Stop Engine

Control in the 

STOP

[

O

] position (Fig. 8).

6. Squeeze the throttle control to the wide open 

(full throttle) position.

7. With the unit in the starting position (Fig. 10) pull the

starter rope briskly 5 times in the 

FULL 

choke (

A

position. If the engine attempts to run before the fifth
pull, proceed to step 8.

8. Move the choke lever to the 

PARTIAL

(

B

) position

(Fig. 9).

NOTE:

The engine will not run in the 

FULL 

choke (

A

position.

9. Pull the starter rope 1 to 3 pulls until the engine

starts. Run for 15-30 seconds. If the unit fails to start
return to step 7.

10. Move the choke lever to the 

RUN

(

C

) position 

and

run at full throttle for 30 seconds.

Start / Stop

Control

Primer Bulb

Choke Lever

Starter Rope

Throttle Control

Summary of Contents for 875r

Page 1: ...875r 4 Cycle Gas Trimmer OPERATOR S MANUAL FOR QUESTIONS CALL 1 800 345 8746 in U S or 1 800 265 6778 in CANADA www ryobi com IMPORTANT MANUAL DO NOT THROW AWAY...

Page 2: ...E UNIT TO THE RETAILER NOTE PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE Make sure this manual is carefully read and understood before starting or operating this equipment THIS PRODUCT IS C...

Page 3: ...estor If it requires replacement ask your LOCAL SERVICE dealer to install the Accessory Part 180890 Spark Arrestor Screen FOR QUESTIONS CALL 1 800 345 8746 IN U S OR 1 800 265 6778 in CANADA Californi...

Page 4: ...Failure to so can result in personal injury to the operator and bystanders as well as damage to the unit Use only 0 080 inch 2 03 mm diameter genuine Ryobi replacement line Never use metal reinforced...

Page 5: ...unit only in a well ventilated area outdoors Wear safety glasses or goggles that are marked as meeting ANSI Z87 1 1989 standards and ear hearing protection when operating this unit Wear a face or dus...

Page 6: ...arnings and safety instructions Failure to do so can result in serious injury to the operator and or bystanders FOR SERVICE INFORMATION CALL USA 1 800 345 8746 CANADA 1 800 265 6778 WEAR EYE AND HEARI...

Page 7: ...get extremely hot from operation When turned off they remain hot for a short time SHARP BLADE WARNING Sharp blade on cutting attachment shield To prevent serious injury do not touch line cutting blad...

Page 8: ...ed with the 875r See list of add ons on page 13 Cutting Attachment Shield Fuel Cap Throttle Control J Handle Cutting Attachment Shaft Grip Primer Bulb Choke Lever Oil Fill Plug Dipstick Air Filter Cov...

Page 9: ...3 position the J handle to the location that provides you the best grip Decal ADJUSTING THE J HANDLE 1 Loosen the four 4 screws holding the J handle in place Fig 1 Do not completely remove the screws...

Page 10: ...tle of SAE 30 SF SG SH oil Fig 4 NOTE Save the bottle to measure the correct amount for future oil changes See Changing the Oil Pg 19 1 Unscrew the top of the bottle of oil and remove the paper seal c...

Page 11: ...he primary reason for the unit not running properly Be sure to use fresh clean unleaded Gasoline NOTE This is a four cycle engine In order to avoid damage to the unit do not mix oil with Gasoline Defi...

Page 12: ...oline has not entered the bulb press three more times or until it does 4 Squeeze the throttle control to the wide open full throttle position 5 With the unit in the starting position Fig 10 pull the s...

Page 13: ...Turn the knob counterclockwise to loosen Fig 11 2 Press and hold the release button Fig 11 3 While firmly holding the upper shaft housing pull the cutting attachment or add on straight out of the Cli...

Page 14: ...ever possible Cutting to the right improves the unit s cutting efficiency Clippings are thrown away from the operator Slowly move the trimmer into and out of the cutting area at the desired height Mov...

Page 15: ...ed service dealer MAINTENANCE SCHEDULE These required maintenance procedures should be performed at the frequency stated in the table They should also be included as part of any seasonal tune up MAINT...

Page 16: ...g line Wind the inner reel with new line Install a prewound inner reel Winding the Inner Reel With New Line NOTE It Is unnecessary to remove the bump knob to install new trimming line 1 Cut two pieces...

Page 17: ...ding slots in the inner reel Fig 22 Releasing the Inner Reel If the SpeedSpool does not release line correctly pull the ends of the line firmly from the spool Fig 22 If this does not release line foll...

Page 18: ...and tighten clockwise 9 Install new line as described in Line Installation for the SpeedSpool Pg 16 5 Clean the shaft and the inner surface of the outer spool To clean the shaft underneath the plunge...

Page 19: ...THE OIL For a new engine change the oil after the first 10 hours of operation Change the oil while the engine is still warm The oil will flow freely and carry away more impurities CAUTION Wear gloves...

Page 20: ...lter in detergent and water Fig 33 Rinse the filter thoroughly and allow it to dry 4 Apply enough clean SAE 30 motor oil to lightly coat the filter Fig 34 Air Filter Choke Lever Air Filter Cover Tab F...

Page 21: ...structions to prevent serious personal injury If after checking the fuel and cleaning the air filter the engine still will not idle adjust the idle speed screw as follows 1 Start the engine and let it...

Page 22: ...This requires disassembly of the engine If you feel unsure or unqualified to perform this take the unit to an authorized service center NOTE Inspect the valve to rocker arm clearance with a feeler gau...

Page 23: ...ver Slip the long tabs on the muffler cover into the engine cover Slide the notches on the side of the muffler cover over the tabs on the engine cover and snap into place Fig 38 14 Check the spark plu...

Page 24: ...UTION Do not sand blast scrape or clean electrodes Grit in the engine could damage the cylinder 4 Install a correctly gaped spark plug in the cylinder head Tighten by turning the 5 8 in socket clockwi...

Page 25: ...d parts and tighten loose screws nuts or bolts The unit is ready for storage TRANSPORTING Allow the engine to cool before transporting Secure the unit while transporting Drain the gas tank before tran...

Page 26: ...Pg 24 C A U S E A C T I O N Ignition switch is OFF Turn switch to ON Empty fuel tank Fill fuel tank Primer bulb wasn t pressed enough Press primer bulb fully and slowly 5 7 times Engine flooded Use s...

Page 27: ...ed Carburetor Diaphragm All Position Starter Auto Rewind Muffler Baffled with Guard Throttle Manual Spring Return Fuel Tank Capacity 20 oz 591 ml Fuel Tank HD Polyethylene ENGINE DRIVE SHAFT CUTTING A...

Page 28: ...NOTES 28...

Page 29: ...he engine or equipment is delivered to the retail purchaser The manufacturer warrants to the initial owner and each subsequent purchaser that the engine is free from defects in material and workmanshi...

Page 30: ...ial or workmanship will be repaired or replaced by an authorized RYOBI service dealer without charge for parts and labor The RYOBI Product including any defective part must be returned to an authorize...

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