MULTIQUIP CA4HC Whiteman Series Operation Manual page 70

Symptom
Weak in power, compression is proper and
does not misfire.
Weak in power, compression is proper but
misfires.
Engine overheats.
Rotational speed fluctuates.
Recoil starter malfunctions. (if applicable)
Starter malfunctions.
Burns too much fuel.
Exhaust color is continuously "white".
Exhaust color is continuously "black".
Will not start, no power with key "ON". (if
applicable)
PAGE 34 — CA4HM WALK-BEHIND TROWEL — OPERATION MANUAL — REV. #3 (10/28/10)
Troubleshooting (Engine) - continued
Possible Problem
Air cleaner dirty?
Improper level in carburetor?
Defective spark plug?
Improper spark plug?
Water in fuel system?
Dirty spark plug?
Ignition coil defective?
Spark plug heat value incorrect?
Wrong type of fuel?
Cooling fins dirty?
Intake air restricted?
Oil level too low or too high?
Governor adjusted incorrectly?
Governor spring defective?
Fuel flow restricted?
Recoil mechanism clogged with dust and
dirt?
Spiral spring loose?
Loose, damaged wiring?
Battery insufficiently charged?
Starter damaged or internally shorted?
Over-accumulation of exhaust products?
Wrong spark plug?
Lubricating oil is wrong viscosity?
Worn rings?
Air cleaner clogged?
Choke valve set to incorrect position?
Carburetor defective, seal on carburetor
broken?
Poor carburetor adjustment, engine runs too
rich?
ON/OFF device not activated ON?
Battery disconnected or discharged?
Ignition switch/wiring defective?
TROUBLESHOOTING
Solution
Clean or replace air cleaner.
Check float adjustment, rebuild carburetor.
Clean or replace spark plug.
Set to proper gap.
Flush fuel system and replace with correct
type of fuel.
Clean or replace spark plug.
Replace ignition coil.
Replace with correct type of spark plug.
Replace with correct type of fuel.
Clean cooling fins.
Clear intake of dirt and debris. Replace air
cleaner elements as necessary.
Adjust oil to proper level.
Adjust governor.
Replace governor spring.
Check entire fuel system for leaks or clogs.
Clean recoil assembly with soap and water.
Replace spiral spring.
Ensure tight, clean connections on battery
and starter.
Recharge or replace battery.
Replace starter.
Check and clean valves. Check muffler and
replace if necessary.
Replace spark plug with manufacturer's
suggested type.
Replace lubricating oil with correct viscosity.
Replace rings.
Clean or replace air cleaner.
Adjust choke valve to correct position.
Replace carburetor or seal.
Adjust carburetor.
Turn on ON/OFF device.
Check cable connections. Charge or replace
battery
Replace ignition switch. Check wiring.