Slow GL-1200 throttle return

I've recently had a local Honda dealer replace the front fork seals on my
1985 Aspencade. When I got it back, the first thing I noticed is that when I
shift gears, the throttle does not return to idle quickly when releasing the
throttle pressure. Instead, it lingers near the speed it was at, thus
causing for a hard shift. Of course, the dealer says they had nothing to do
with it. It just happened to go wrong between the time they loaded it on
their trailer to take it to the shop and when I picked it up.

I've heard that this is controlled by vacuum diaphragms in the carbs. Does
anyone have any ideas about what may be causing the problem or how to go
about troubleshooting it? I just sold it to a friend and I'd like to do it
with a clean conscience.

Please respond to newsgroup, because I'm tired of getting an inbox full of
crap every time I post my real email address.

Thanks....

 

Does the throttle return slowly only when the engine is running? If it
returns slowly whether the engine is on or off, that sounds like a
mechanical problem instead of a vacuum problem. Given that the dealer
had the forks off, it's quite likely that they had to do some
disassembly/moving of the throttle cable, grip, etc. to get them on or
off.

While I'm not familiar with GL's, here are some possibilities to check:

1.the routing of the throttle cable. It may be pinched, mis-router, or
otherwise obstructed.

2. your throttle return spring (I'm assuming it's got one).

3. the carburetors themselves for smooth operation of the butterflies.

4. disconnect the throttle cable from the twistgrip and check for smooth
operation of the grip itself.

HTH. If it doesn't, surely someone else here will point out the correct
solution (and the obvious clue that I missed). ;-)

--
Later,
John



'indiana' is a noun. Leave only the noun between @ and .edu to reply

 

Sounds like the dealer has trapped the throttle cable somehow.

It's unlikely to be the diaphragms because the early Wing carbs don't
use them. They used steel pistons, rising and falling under vacuum.

I *think* the 1985 model did as well, but SWK will confirm - or not.