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6. Maintenance
Item Standard Value or Service Limit
No-load
Characteristic
Vo l t s 11
Amps. 110 Max.
R.P.M. 2400 Min.
Commutator
Outer Dia. 29.4 mm
Service Limit 28.8 mm
Brush
Length 17.5 mm
Service Limit 10 mm
Brush spring
Tension
22.5～32.5 N
Service Limit 10 N
Pinion Movement （Pinion Gap） 0.5～2.0 mm
7. Troubleshooting
（1）Pinion dose not advance even though the key switch is turned ON.
Unit Cause Remedy
Wiring
Disconnected wire, untightened battery and switch terminals, or
improper contact of the inserting part.
Correct and retighten
Key switch Improper contact preventing flow of current.
Correct or replace the
contact part
Starting motor
Helical spline of the pinion shaft is scored and prevents the pinion
from moving.
Replace or correct
Magnet switch
Improper movement of the plunger of the magnet switch or
disconnected wire or short circuit of the coil.
Correct or replace
（2）Though the pinion is engaged and the motor rotates, the rotation is not transmitted to the engine.
Unit Cause Remedy
Starting motor
Defective clutch.
Broken reduction gear.
Replace
Replace
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