How do I set the timing on my Mercury outboard?
Adjust the Ignition Timing Detach the throttle cable from the power head and attach a timing light to the top spark club lead. Adjust the ignition timing. Shift into neutral and start the engine while holding the throttle arm. Adjust the idle timing screw so that it is 2 degrees before top dead center.
Is there an hour meter on Mercury outboard?
Locate the hour meter. They are normally found on the dash of the boat, but sometimes are mounted under the dash or in the engine compartment.
How many hours on outboard is a lot?
Big 4 strokes are good for 5,000 to 6,000 hours. I don’t know in what world 500 hours is high unless it is per year. There’s a ton of boats here that are 10-15 years old with just a few hundred hours….or less.
What do you need to know about timing a Mercury outboard motor?
Make note of the timing belt, throttle cable, flywheel, spark plugs and idle timing screw. You must have a dial indicator and timing light to properly adjust the timing of your outboard motor. You will also be required to use some type of spark plug gap tool.
How to set the timing light on a MerCruiser?
1. Connect timing light (91-99379 or similar) to No. 1 spark plug wire. Connect power supply leads, if applicable, on light to 12 volt battery. Refer to Specifications – “Engine Rotation and Firing Order” for cylinder numbering and location. 2. Connect a shop tachometer to engine. 3.
What do I need to test my MerCruiser engine?
Two items of test equipment are required: an inductive pickup timing light and one of either a Scan Tool, Marine Diagnostic Code Tool or MerCruiser Special Timing Tool (Quicksilver 91-805747A1). 1. Connect timing light (91-99379 or similar) to No. 1 spark plug wire.
What should the advance be on a MerCruiser engine?
Verify that timing did advance to 12o BTDC, plus or minus 2o. At 2400-2800 RPM maximum (total) advance is obtained and should be 27o BTDC (plus or minus 2o). 13. Stop the engine and remove the timing light. 1. Connect timing light (91-99379 or similar) to No. 1 spark plug wire. Connect power supply leads, if applicable, on light to 12 volt battery.
Make note of the timing belt, throttle cable, flywheel, spark plugs and idle timing screw. You must have a dial indicator and timing light to properly adjust the timing of your outboard motor. You will also be required to use some type of spark plug gap tool.
What are the specifications of a Mercury MerCruiser?
Mercruiser 7/4/8.2L Big V8 engine mechanical specifications including fastener torques, and engine manufacturing dimensions and tolerances. Mercruiser Big V8 Engine Fasteners Torque Specifications. Mercruiser 8.1L/V8 engine specifications including horsepower, displacement, rpm, oil pressure, ignition timing, firing order, etc
Where can I find the Mercury outboard service manual?
More than 80+ owner’s, operation, repair and service manuals for Mercury outboard motors are on this page, including parts catalogs. Mercruiser and Mercury Racing (Sterndrive) Service Manual Index [PDF, ENG, 128 KB].pdf
What kind of motor does Mercury Marine use?
Mercury Marine is one of the most recognized nautical supply companies on the market today. Its outboard motors control a large market for small and mid-size recreational boats. At some point you’ll need to know how to set or adjust the timing of a new Mercury motor.