Spark Plug Inspection; Carburetor Adjustment; Water Leakage Check - Yamaha YP20G Owner's Manual

760-005a
q
760-001
AE00423

SPARK PLUG INSPECTION

You should periodically remove and inspect the spark
plug.
1. Check for discoloration and remove the carbon.
Standard electrode color:
Tan Color
2. Check the spark plug type and gap.
Standard Spark Plug:
BPR4ES (NGK)
Spark Plug Gap:
0.7–0.8 mm (0.028–0.031 in)
1 Gap
3. Install the spark plug.
Spark Plug Torque:
20 N•m (2 kgf•m, 14 lbf•ft)
AE00431

CARBURETOR ADJUSTMENT

The carburetor is a vital part of the engine. Adjusting
should be left to a Yamaha dealer with the profession-
al knowledge, specialized data, and equipment to do
so properly.
CE00521

WATER LEAKAGE CHECK

Check for water leakage from water pump.
Retighten the bolts, plugs, band, and hose joints.
Replace O-rings and/or gaskets if necessary.
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