Cobra DG450, Руководство пользователя, Страница: 11 / 15

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A loose spark plug can become very hot and can damage the engine. Over tightening the spark plug can
damage the threads in the cylinder head.
Please be aware that incorrect spark plugs can cause engine damage.
Always ensure that the spark plug must be properly gapped and free of deposits.
Please be aware that incorrect spark plugs can cause engine damage.
Always ensure that the spark plug must be properly gapped and free of deposits.
1. Remove/disconnect the cap from the spark plug, clean and remove the dirt from around the plug and immediate area.
2. Ensure that the correct size spark plug wrench is used when removing the spark plug.
3. Inspect the spark plug. If the plug is worn or damaged, badly fouled, or if the sealing washer is in poor condition or if
the electrode is worn replace with the correct spark plug.
4. It is important that the electrode gap is correct. Measure the electrode gap with a suitable gauge. The correct gap is
0.028 - 0.031 in (0.70 0.80 mm). If adjustment is needed, correct the gap by carefully bending the side electrode.
5. Be careful when installing the spark plug, by hand, to avoid cross-threading.
6. Ensure the correct size wrench is used when tightening the washer.
7. When installing a new spark plug, tighten 1/2 turn after the spark plug seats to compress the washer.
8. When reinstalling the original spark plug, tighten 1/8 1/4 turn after the spark plug seats to compress the washer
FLYWHEEL BRAKE INSPECTION
1. Check to see if the inspection screw is contacting the brake bracket.
2. If the inspection screw is contacting the brake bracket, take the engine to a Cobra authorized engine servicing dealer
for flywheel brake pad inspection.
3. Release the starter control handle (located on the equipment) and verify that there is a strong resistance when pulling
on the recoil starter. Also verify that the governor arm is moved to the idle (slow), position and there is free play in the
cable. The cable should be 10 to 15 mm from the centerline as shown when the cable is new.
4. Move the starter control handle (located on equipment) to release the flywheel brake, and verify that there is clearance
between the governor arm and the throttle return rod when the throttles is in the fast (or high) position. Also verify that
there is at least 2 mm clearance between the stopper and the brake cable bracket.
8. Fuel tank
A: Fly wheel
B: Brake system