background image

RULES FOR SAFE OPERATION

4

DANGER

: Failure to obey a safety warning

will result in serious injury to yourself or to
others. Always follow the safety precautions
to reduce the risk of fire, electric shock, and
personal injury.

WARNING

: Failure to obey a safety warning

can result in injury to yourself and others.
Always follow the safety precautions to
reduce the risk of fire, electric shock, and
personal injury. 

CAUTION:

Failure to obey a safety warning

may result in property damage or personal
injury to yourself or to others. Always follow
the safety precautions to reduce the risk of
fire, electric shock, and personal injury.

The purpose of safety symbols is to attract your 
attention to possible dangers. The safety symbols, and
their explanations, deserve your careful attention and
understanding. The safety warnings do not by 
themselves eliminate any danger. The instructions or 
warnings they give are not substitutes for proper 
accident prevention measures.

SYMBOL

MEANING

SAFETY ALERT SYMBOL:

Indicates 

danger, warning, or caution. Attention is
required in order to avoid serious personal
injury. May be used in conjunction with other
symbols or pictographs. 

NOTE:

Advises you of information or instructions vital

to the operation or maintenance of the equipment.

• IMPORTANT SAFETY INFORMATION •

READ ALL INSTRUCTIONS 

BEFORE OPERATING

• Read the instructions carefully. Be familiar with the

controls and proper use of the unit.

• Do not operate this unit when tired, ill, or under the

influence of alcohol, drugs, or medication.

• Children and teens under the age of 15 must not use

the unit, except for teens guided by an adult.

• Inspect the unit before use. Replace damaged parts.

Check for fuel leaks. Make sure all fasteners are in
place and secure. Replace cutting attachment parts
that are cracked, chipped, or damaged in any way.
Make sure the cutting attachment is properly installed
and securely fastened. Be sure the cutting attachment
shield is properly attached, and positioned as
recommended. 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 line,
wire, or rope, etc.. These can break off and become a
dangerous projectile. 

• Be aware of the risk of injury to the head, hands and

feet.

• Clear the area to be cut before each use. Remove all

objects such as rocks, broken glass, nails, wire, or
string which can be thrown or become entangled in
the cutting attachment. Clear the area of children,
bystanders, and pets. At a minimum, keep all children,
bystanders and pets outside a 50 feet (15 m.) radius;
there still may be a risk to bystanders from thrown
objects. Bystanders should be encouraged to wear
eye protection. If you are approached, stop the engine
and cutting attachment immediately.

• Squeeze the throttle control and check that it returns

automatically to the idle position. Make all adjustments
or repairs before using unit.

• This unit was not designed to be used as a 

brushcutter. Do not attach or operate this unit with any
type of brushcutting blade or brushcutting attachment.

SAFETY WARNINGS FOR GAS TRIMMERS

WARNING:

Gasoline is highly flammable, and its vapors

can explode if ignited. Take the following precautions:

• Store fuel only in containers specifically designed and

approved for the storage of such materials.

• Always stop the engine and allow it to cool before 

filling the fuel tank. Never remove the cap of the fuel
tank, or add fuel, when the engine is hot. Never 
operate the unit without the fuel cap securely in place.
Loosen the fuel tank cap slowly to relieve any pressure
in the tank.

• Add fuel in a clean, well-ventilated area outdoors

where there are no sparks or flames. Slowly remove
the fuel cap only after stopping engine. Do not smoke
while fueling or mixing fuel. Wipe up any spilled fuel
from the unit immediately. 

• Avoid creating a source of ignition for spilled fuel. Do

not start the engine until fuel vapors dissipate.

• Move the unit at least 30 feet (9.1 m) from the fueling

source and site before starting the engine. Do not
smoke, keep sparks and open flames from the area
while adding fuel or operating the unit.

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...

Reviews: