Section 03
ENGINE
Subsection 02
(TROUBLESHOOTING)
VMR2004_125_03_02A.FM
03-02-19
SYMPTOM
STARTER TURNS, BUT ENGINE DOES NOT CRANK.
CONDITION
NORMAL USE.
Test/Inspection
1. Check gear condition on electric starter.
a. Worn and/or damaged starter gear.
Replace electric starter and/or starter drive.
2. Check condition of starter pinion gear.
a. Worn and/or damaged starter pinion and/or ring gear.
Replace starter drive and/or drive pulley fixed half.
3. Check splines on starter drive.
a. Poor movement of pinion gear on splines.
Clean and/or replace starter drive.
SYMPTOM
ENGINE DOES NOT START — NO SPARK AT SPARK PLUG (SEE MAGNETO SYSTEM).
CONDITION
AT ENGINE CRANKING.
Test/Inspection
1. Verify spark plug condition.
a. Defective, improperly set, worn out, fouled.
Identify source of problem and correct. Replace spark plug.
2. Verify condition of ignition coil and resistance with an ohmmeter.
a. Mechanically damaged part. Vibration problem. Electrically damaged part.
Replace ignition coil.
3. Verify condition of CPS and resistance with an ohmmeter and connector condi-
tion.
a. Defective CPS. Corroded connector terminal.
Replace CPS. Clean terminals and apply silicone dielectric grease.
b. Mechanically damaged part. Vibration problem. Electrically damaged part.
Replace CPS and/or tighten mounting screw(s).
c. Metallic particles caused a short circuit between the soldered connections.
Clean CPS from metallic dust.
4. Check magneto for damage and/or electrical failure.
a. Windings of stator have electrical failure (no charging causes an empty battery).
Replace magneto.