YARDMAX RV170-S PRO User Manual

Gasoline Engine » Operator's Manual
If still can't starting, have the engine to our authorized dealer for repairing.
A WARNING
When testing the spark plug, never hold the high-voltage wire of the spark plug with wet hand.
Make sure there is no spilled fuel outside the engine and that the spark plug isn't dipped with fuel.
To prevent frre, keep sparks far away from the spark plug mounting hole.
2. Gasoling Engine Power Output Insufficiency
TROUBLE CAUSE REMEDY
Fuel supply system
1.
Air in fuel line or fuel line clogged
1. Exhaust
air or dredge fuel line
2. Main oil flow hole is not adjusted properly
2. Readjust
3. In carburetor, needle valve hole and main oil
3. Clean and biow to get through
flow hole clogged
4. Clean, replace damaged
part
4. Fuel cock is clogged up
5. Clear away
5. Too much carbon deposit incombusting chamber.
6. Clear away
When increasing
6. Too niuch car boii fouling in muffler and exhaust
throttle, speed
pipe
7. Clean air cleaner filter element
increase slow
or
7. Air cleaner is cloed up
8. Repair or replace
even decrease and
stop running
8. Intake pipe is leaking
Poor compression
1. Piston
or cyhnder or pistoll ring is worn
1. Replace the worn
2. Air leakage from the surface by which cylinder
2. Replace the cylinder gasket
block contacting Replace cylinder gasket
with
cylinder head.
3. Readjust
3. Too big or too small valve clearance
4. Repair
4. Valve tightness is poor
3. Gasoline Engine Gan not Running Unsmoothly
TROUBLE CAUSE REMEDY
1. Piston, cylinder
or piston ring is worn excessively 1. Replace the worn
Knocking sound
2. Piston pin and piston pin hole are won excessive 2. Replace piston or piston pin
3. Tie rod small head is worn excessive 3. Replace tie rod
4. Roller bearing
for crankshaft main shaft is worn 4. Replace roller bearing
1. Engine
is too hot 1. Shoot trouble
Abnormal
2. Too much carbon deposit in combustion chamber 2. Clear away
combustion
3. Improper gasoline brand or low gasoline quality 3. Replace with qualified gasoline
1. There
is water in float chamber 1. Clean
Spark lacking
2. Improper spark plug electrodes clearance 2. Adjust
3. Something wrong with induced coil, and so on
3. Check and replace damaged parts
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YARDMAX RV170-S PRO Specifications

General

Brand	YARDMAX
Model	RV170-S PRO
Category	Engine
Language	English