CBR F3 Gearbox

**jimdaworm** · 30th October 2005, 10:33

What are you experiences with these? From what I can tell on the web they dont have a good name for their gearboxes. I just notice mine makes clunking noises quite often when I change gear and occasionally goes into false nuetrals.

Anything I can do to make it better/quieter

**inlinefour** · 30th October 2005, 10:57

alot of bikes do this, even the allmighty gsxr.

**jimdaworm** · 30th October 2005, 11:01

True. I just never new it. I was reading its somthing to do with a wet clutch and not completely dis-engaging?? It that right?

**James Deuce** · 30th October 2005, 11:01

Originally Posted by jimdaworm

What are you experiences with these? From what I can tell on the web they dont have a good name for their gearboxes. I just notice mine makes clunking noises quite often when I change gear and occasionally goes into false nuetrals.

Anything I can do to make it better/quieter

Check your chain adjustment. If it's too loose it can make it feel like your gearbox is about to stop working altogether.

Also disassemble and lubricate the gear lever and associated mechanism.

**James Deuce** · 30th October 2005, 11:04

Originally Posted by jimdaworm

True. I just never new it. I was reading its somthing to do with a wet clutch and not completely dis-engaging?? It that right?

If you're getting clutch drag then you may want to look at adjusting your clutch cable. You should probably lube the clutch cable too.

**ben444** · 30th October 2005, 11:10

Honda gearboxes are kinda bad.. they really need the engagement dogs undercut.. I've had issues on a Fireblade, NC30, CBR400, and CBR600F4.. where they won't stay in gear.. Whats the history of the bike?? Being thrashed/raced doesn't help them(usually the problem i have wit mine)

**Slingshot** · 30th October 2005, 11:55

I'd suggest an oil change. It's easy to do and once you've done it you'll know that it's got decent oil in it and that it's been changed recently. I used the specific motorbike oil from Pennzoil and I was quite happy with it.

The basic maintenance stuff is normally one of the first things I do when I get a new bike.

While you're at it, I'd suggest that you pull the air cleaner out and give it a good clean (you shouldn't need to replace it) it would also be a good idea to pull the plugs out and clean or replace them and replace the coolant.

**jimdaworm** · 30th October 2005, 12:10

Its not been raced that I know of. Last week it was serviced at Motorad.

This is the work from the worksheet:

New Oil and filter (Shell ADVANCE VSX4 15w-50)
Cleaned airfilter
checked plugs
balanced carbs and set fuel and idel screws
adjusted and lubed chain (WAY too tight apparently)
checked wheel bearings
lubed chasis and pivots
adjusted steering head bearings.

It never pops out of gear or anything... it sure is taking a bit of getting used to having sooo much engine braking after the RG 150

I might check out the gear mechanism sometime.

Anyone got a manual for the cbr f3?

**ben444** · 30th October 2005, 12:15

don't think there should be nothing to worry about... just a typical honda gearbox then.. it would probably seem to be a bit clunky after a silky smooth suzuki 2-stroke one..

**Ixion** · 30th October 2005, 12:16

Mate, take a BMW for a ride. You'll never complain about your gearchnage again

**Slingshot** · 30th October 2005, 12:34

Originally Posted by jimdaworm

Anyone got a manual for the cbr f3?

I've got a copy of the service manual but it's 146Mbs. Pm me your address and I'll post you a copy on CD.

**TwoSeven** · 30th October 2005, 12:55

Honda gearboxes require a unique style. Its just a positive slow shift. Pull in the lever, then shift, then release. Dont try and do a half shift where your pushing down on the lever at the same time as pulling in the clutch.

**inlinefour** · 30th October 2005, 13:42

Originally Posted by TwoSeven

Honda gearboxes require a unique style. Its just a positive slow shift. Pull in the lever, then shift, then release. Dont try and do a half shift where your pushing down on the lever at the same time as pulling in the clutch.

Wise words there, wise words.

**Slingshot** · 30th October 2005, 15:59

Originally Posted by TwoSeven

Honda gearboxes require a unique style. Its just a positive slow shift. Pull in the lever, then shift, then release. Dont try and do a half shift where your pushing down on the lever at the same time as pulling in the clutch.

I tend to disagree, I used to change like in the fashion that you described and had no problems with it.

I think gear boxes are a subjective thing, I've heard people go on about how [insert brand here] have shitty gear boxes while [insert a different brand here] have fantastic gear boxes. It really depends who you're talking too.