Page N-3
Repair and Service Manual
B
B
TROUBLESHOOTING
Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
POOR LOW SPEED
PERFORMANCE
Plugged gas tank vent
Clean or repair
Choke on
Push choke in
Carburetor float level incorrect
Check/Replace float
Clutches not shifting out
Replace clutch/clutches
Fuel pump faulty
Repair or replace
Insufficient fuel level
Add fuel
Air leak at carburetor gasket
Repair component
Spark plug fouled
Clean or replace
Weak spark
Check magneto
Incorrect valve lash
Check and adjust
Belt slipping
Check belt & clutch surfaces
Replace belt or clean clutches
Faulty accelerator adjustment
Check and adjust
Faulty governor adjustment
Check and adjust
POOR MIDRANGE OR HIGH SPEED
PERFORMANCE
Spark plug fouled
Clean or replace
Weak spark
Check magneto
Carburetor float not level
Adjust
Incorrect or plugged main jet
Check size for appropriate altitude. Clean
Dirty air filter
Clean or replace
Brake dragging
Perform brake maintenance
Low compression
Check engine
Governor not adjusted properly
Adjust
Faulty accelerator adjustment
Check and adjust
Faulty governor adjustment
Check and adjust
ENGINE OVERHEATING
Foreign matter in cylinder fins and blower
housing
Clean
Damaged blower housing or fins
Replace
Damaged or plugged muffler
Repair or replace
Inadequate oil supply
Check oil system, inspect oil pump,
change oil, fill to correct level
Heavy loads
Lighten load
Incorrect Fuel
Use correct seasonal blend fuel. Do not
use old fuel
Condition
Possible Cause
Correction
Summary of Contents for 625619 2012
Page 6: ...Page iv Repair and Service Manual NOTES TABLE OF CONTENTS ...
Page 181: ......