How do I bleed tilt/trim cylinder on a mercury outboard?

Answer by  Christian9247 (5042)

I don't think its necessary but you would let the air out of it. However if you do this wrong you can cause an airlock in the line.

Answer by  ferfer72 (2623)

Like brake lines, you have to get the air out of it. If you don't, it can cause airlock and the trim won't move. Consult a professional to bleed the cylinder.

Answer by  McCheese (1248)

You need to disconnect the battery and unplug the tilt line. Hook the line up to an air compressor, or manually blow excess air out. When you place the tilt line back on the engine, the meter should read "full" if you've done it right.

Answer by  helper3692 (100)

It is possible to bleed the hydraulic lines by having someone apply pressure while loosing the nut tha holds the line on. The only reason someone would need to bleed the system is that maybe someone replaced the trim cylinder. The cylinder probably does not have a bleeder screw,so this is the only way someone could bleed the system.