760-023

a

760-001a

AE00971

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)

aGap

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 professional knowledge, specialized data, and equipment to do so properly.

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