EN
Spark plug
Recommended spark plug: TORCH F7RTC
To ensure proper engine operation, the spark plug must be properly gapped and free of deposits.
• Remove the spark plug cap.
• Visually inspect the spark plug. Discard it if the insulator is cracked or chipped.
• Measure the plug gap with a feeler gauge. The gap should be 0.7-0.8mm (0.028-0.031 in), correct as necessary by bending the side electrode.
• Insert the spark plug by hand at first and then use a wrench to tighten it as much as necessary.
Warning: If the engine has been running the muffler will be very hot. Be careful not to touch the muffler.
Caution: The spark plug must be securely tightened. An improperly tightened plug can become very hot and possibly damage the engine. Never use a worn
or damaged spark plug.
Clutch cable adjustment (Fig. 29)
Measure the free play at the lever tip.
Free play: 3-8mm (0.1 - 0.3 inches)
• If the free play is incorrect, loosen the lock nut and turn the adjusting bolt in or out as required.
• After adjustment, tighten the lock nut securely. Then start the engine and check for proper clutch
lever operation.
(1) Lock nut
(2) Adjusting bolt
Throttle cable adjustment (Fig. 30)
Measure the free play at the lever tip.
Free play: 5-10mm (0.2 - 0.4 inches)
• If the free play is incorrect, loosen the lock nut and turn the adjusting nut in or out as required.
(1) Throttle lever
(2) Adjusting nut
(3) Lock nut
Fig. 29
Fig. 30
Belt tension adjustment (Fig. 31, 32)
• Adjust the clutch lever free play.
• The standard belt tension is 60-65mm (2.4-2.6 in) at the tension roller with the clutch engaged
(clutch lever is squeezed).
• To adjust, loosen the four engine mounting bolts and the engine stay tightening bolt and move
the engine forward or reverse to get proper tension of the belt.
Note:
After adjusting the tension, make sure that the outside face of the drive pulley is aligned with
the outside face of the driven pulley by using a straight gauge.
Fig. 31
Fig. 32
(1) Engine mounting bolts
(2) Engine stay tightening bolt
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Summary of Contents for MB6000
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