Mercury throttle control very stiff

[tim2658]

I have a quicksilver throttle control box but it's so stiff I've loosened off the friction screw but no change and cleaned all the old grease out and regressed but no change, and it's really hard to find the gears, this is all with the cables taken off so 100% the box , any ideas all shall I purchase a new one !!!

[matt h]

if your good with splitting the boxes then have a go .. oil and grease everything

Also the Merc 75 and 90 have a gear input issue. as the gear selector rod goes through the lower cowling it passes through a nylon bush which gets very tight.. its a powerhead off to see to that little issue!

[spartacus]

Chances are there's a nylon bush behind the throttle lever and the grease is probably non-existent, so that's what I'd be looking at.

[Festinghouse]

did you take the cables off the box or the engine? i had this but cured it with new cables

[Jizm]

Mine did this. Repaired it then it did it again. New one purchased in the end....

[tim2658]

Cheers guys I will strip it again tomorrow, and I've been doing it with the cables disconnected from the control box end, looks like a new box might be on the cards !!!!

[9D280]

Other thing (possibly related to lack of grease) is there are a few plastic bushes in there - needless to say once worn the mechanism looses a lot of it's "positive" feel & accuracy.

I had the same issue with a Yam 703. £7 or so of bushing later it was lke new. (well, operationally, the visuals I must get round to some day!)

Also those boxes are fairly standard inside. If you can't get spare bits from Quicksilver I'm fairly certain Yam spares will fit.

[Jizm]

I have a throttle linkage if needed.