Hello,
New to this forum and boat motors to be honest.
I bought the manual on all the maintenance of the engine read the part on timing and completely confused. I even searched here and google which returned little help
. I have done timing on cars and that was easy! but this mercury motor i am lost.
It talks about timing light and hook up and setting the various timing yet I don't have a battery (I know i can just use a 12 vdc source), yet how do I do the whole timing thing when the engine is not running and has only one spark plug.
If a kind person who could give a willing and wanting to learn newbie some step by step help or video that would be greatly appreciated.
The below is the notes from my manual with little other guidance or instructions.
Maximum Timing Adjustment
1. Connect timing light to No. 1 (top) spark plug lead.
2. With engine in Forward gear, fully advance throttle to WOT (Wide Open Throttle) position.
3. Adjust maximum spark advance screw to align the 36? BTDC (Before Top Dead Center) timing mark on flywheel with timing pointer. Tighten jam nut if so equipped.
4. Adjust low speed mixture screw. Refer to Section 3A-Carburetor Adjustments.
Idle Timing Adjustment
1. Push primer/fast idle knob completely in and rotate knob fully counterclockwise.
2. With engine running in Forward gear, reduce engine speed to idle.
IMPORTANT: It may be necessary to adjust idle speed screw to obtain a reasonably stabilized idle.
3. 4.
Adjust idle timing adjustment screw to align the specified idle timing mark on flywheel with timing pointer.
Shift to Neutral gear and stop engine.
Fast Idle Adjustment (Not sure where to place a meter for this as I do have a automotive tachometer!!!!)
1. Push primer/fast idle knob completely in and rotate knob fully COUNTERCLOCKWISE.
2. Shift outboard to NEUTRAL.
3. Adjust screw to remove all clearance between idle wire and trigger.
4. Check fast idle by turning primer knob to full CLOCKWISE position. Fast idle speed should be 1500 ? 2000 RPM.
Many thanks and allowing me to join this forum and the help everyone might be able to help or provide.
Wan
New to this forum and boat motors to be honest.
I bought the manual on all the maintenance of the engine read the part on timing and completely confused. I even searched here and google which returned little help
. I have done timing on cars and that was easy! but this mercury motor i am lost.It talks about timing light and hook up and setting the various timing yet I don't have a battery (I know i can just use a 12 vdc source), yet how do I do the whole timing thing when the engine is not running and has only one spark plug.
If a kind person who could give a willing and wanting to learn newbie some step by step help or video that would be greatly appreciated.
The below is the notes from my manual with little other guidance or instructions.
Maximum Timing Adjustment
1. Connect timing light to No. 1 (top) spark plug lead.
2. With engine in Forward gear, fully advance throttle to WOT (Wide Open Throttle) position.
3. Adjust maximum spark advance screw to align the 36? BTDC (Before Top Dead Center) timing mark on flywheel with timing pointer. Tighten jam nut if so equipped.
4. Adjust low speed mixture screw. Refer to Section 3A-Carburetor Adjustments.
Idle Timing Adjustment
1. Push primer/fast idle knob completely in and rotate knob fully counterclockwise.
2. With engine running in Forward gear, reduce engine speed to idle.
IMPORTANT: It may be necessary to adjust idle speed screw to obtain a reasonably stabilized idle.
3. 4.
Adjust idle timing adjustment screw to align the specified idle timing mark on flywheel with timing pointer.
Shift to Neutral gear and stop engine.
Fast Idle Adjustment (Not sure where to place a meter for this as I do have a automotive tachometer!!!!)
1. Push primer/fast idle knob completely in and rotate knob fully COUNTERCLOCKWISE.
2. Shift outboard to NEUTRAL.
3. Adjust screw to remove all clearance between idle wire and trigger.
4. Check fast idle by turning primer knob to full CLOCKWISE position. Fast idle speed should be 1500 ? 2000 RPM.
Many thanks and allowing me to join this forum and the help everyone might be able to help or provide.
Wan