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Mercury 8 Bigfoot 4-Stroke - Engine Break-In Procedure; Starting the Engine - Tiller Handle Models

Mercury 8 Bigfoot 4-Stroke
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OPERATION
44
2. Check the engine oil level.
ob00555
!
CAUTION
Never start or operate your outboard (even momentarily) without water circulating through all the cooling water
intake holes in the gearcase to prevent damage to the water pump (running dry) or overheating of the engine.
3. Make sure the cooling water intake is submerged.
ob00347
Engine Break‑in Procedure
!
CAUTION
Severe damage to the engine can result by not complying with the Engine Break‑in Procedure.
1. For the first hour of operation, run the engine at varied throttle settings up to 2000 RPM or at approximately
half throttle.
2. For the second hour of operation, run the engine at varied throttle settings up to 3000 RPM or at
three‑quarter throttle, and at full throttle for approximately one minute every ten minutes.
3. For the next eight hours of operation, avoid continuous operation at full throttle for more than five minutes
at a time.
Starting The Engine ‑ Tiller Handle Models
Before starting, read the Pre‑Starting Check List, Special Operating Instructions, and Engine Break‑in Procedure
in the Operation Section.
1. Open fuel tank vent on manual venting type tanks.

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