mjm yachts 40z Downeast, Owner'S Manual

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CHAPTER 13 MAINTENANCE SCHEDULE
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12.1 MAINTENANCE SCHEDULE – STERNDRIVE MODELS
Refer to EOM 50-52, 55-127. Some of the items you may choose to leave to professionals, but
many you can do yourself. In particular, it is a good idea to have a certified mechanic perform
check-ups from time to time on the engine, generator, and any other key equipment installed
onboard. Cummins & Northern Lights engines are assumed – check your manuals if your brands
differ.
.
EACH DAY START
• Check the engine oil level (This task interval can be extended based on operator
experience with the product).
• Check the engine coolant level.
• Check the power assisted steering fluid level.
• Check the sterndrive gear lube level in the gear lube monitor.
EACH DAY END
• If operating in saltwater, brackish water, or polluted water, flush the seawater section
of the cooling system after each use.
• Drain any water from the primary fuel filter after each use (Drain any water from both
fuel filters if operating in freezing temperatures).
WEEKLY
• Drain any water from the fuel filters.
• Check the trim pump fluid level.
• Check the seawater inlets for debris or marine growth.
• Check and clean the seawater strainer.
• Inspect the sterndrive anodes and replace if 50% eroded.
EVERY TWO MONTHS
• Check the battery connections and fluid level.
• Lubricate the propeller shaft and torque the propeller nut (If operating in only
freshwater, this maintenance may be extended to every four months).
Section 5 – Maintenance, Page 52 CMD-4082020 / 90-866933062 NOVEMBER 2006
• Treat the engine surfaces with Corrosion Guard if operating in saltwater, brackish
water or polluted waters.
• Inspect the air filter (Every two months or every 50 hours, whichever occurs first).
• Inspect the engine anodes and replace if 50% eroded.
• Ensure that the gauges and the wiring connections are secure. Clean the gauges
(Every two months or every 50 hours, whichever occurs first. If operating in saltwater,
the interval is reduced to every 25 hours or 30 days whichever occurs first).
AFTER FIRST 25 HOURS AND NOT TO EXCEED 30 HOURS
• Change the engine oil and filter.
ANNUALLY
• Touch up the power package with paint and spray with Corrosion Guard.
EVERY 100 HOURS OR ANNUALLY (WHICHEVER OCCURS FIRST)
• Change the engine oil and filter.
• Change the sterndrive gear lube.
• Torque the gimbal ring U-bolt locknuts.
• Replace the fuel filters.
• Check the steering system and the remote control for loose, missing, or damaged parts.
Lubricate the cables and linkages.
• Inspect and lubricate the sterndrive U-joint splines. Inspect the bellows, the exhaust
tube, and check the clamps.
• Lubricate the gimbal bearing and engine coupler (Lubricate the engine coupler every