MerCruiser 350 Magnum EFI GEN+ Alfa One, Operation And Maintenance Manual

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24
CA239
20-Hour Checkup
After first 20 hours of operation, an Authorized MerCruiser Dealer
should be contacted for the following maintenance. The boat owner
is responsible for any charges.
•
Change crankcase oil and filter.
•
Check all fluid levels.
•
Cooling System - Inspect all hoses for damage and deterioration;
check all hose clamps for adequate tightness.
•
Inspect ignition system and timing.
•
Check for loose, missing or damaged parts.
•
Check shift and throttle cable adjustments - lubricate and inspect
for loose, damaged or missing parts.
•
Steering System - Lubricate and inspect for loose, damaged or
missing parts.
•
Inspect all drive belts.
•
Check engine alignment. Include proper lubrication of U-joint and
splined shaft.
•
Complete Engine Exhaust System - Inspect externally for dam-
age and deterioration; check all hose clamps for adequate tight-
ness.
•
Retorque gimbal ring clamping screws to 50-55 lb. ft. (67-74 N
⋅
m).
•
Check that both front engine mount locknuts are tightened se-
curely. Then, check to ensure that tab washers are bent down
over adjusting nuts.
•
Check that rear engine mounts are torqued to 35-40 lb. ft.
(47-54 N
⋅
m).