re-commissioning a VFR750FH after 3 years unused

FTM

Registered User
#1
I just picked up a low mileage VFR750FH today, it hasn't been started for 3 years and the battery is beyond rescue. The carbs were drained before being stored but petrol was left in the tank. Any tips on anything I should do before trying to start it. I'll be changing the oil and other fluids etc. but will a squirt of engine oil down the plug holes be a good thing or turning the engine over with the kill switch off first to get the oil circulating? Will the clutch plates be stuck together? All suggestions welcomed.
 

saintrommel

saintrommel
Site Sponsor
#2
I think running and warming up before changing the oil might be worthwhile. Pulling the clutch in (in neutral) and blipping the motor should free the clutch plates. I wouldn't squirt anything down the plugholes
but turning over on the kill switch might be worthwhile to prime the oilways
let us know how you go on...:)
 

FTM

Registered User
#4
Add a fuel filter? Do you mean cut the fuel line and add one inline?
Fitted a new battery today and turned it over with the on switch off, turned over beautifully so I turned on the petrol (I know but I'm impatient) but no start. I've taken 1 gallon of fuel out of the tank so far but I ran out of containers so I'll dump the (probably) 3 year old petrol in the wifes car when she gets back from shopping and see how much more comes out.
Did I mention it only has 13300 genuine miles on the clock and still has the original rust free exhausts. Small bit of fall-over scratches to the right side fairing which had been touched up and the tool kit is missing (not a problem as I've got a set from my old FG).
Well happy.
 

FTM

Registered User
#5
Forgot to mention it has 17" wheels on, not sure about the forks yet but the last owner said the wheels were on when he bought it in 91 and he thought they were standard.
 

deniski

Registered User
#6
I kept having starting problems with my old VFR 'cause I don't use it for 6 months (live in a ski village)and in the spring it was a pain to start so cut the pipe from the petrol tank and put in a fuel filter, also now turn the petrol tap off and let it run out of fuel, and drain the carbs (just undo the nut under the float bowls) before storing and now she starts easily.(When i remember to put fresh petrol in !) Heard also that modern fuel without lead goes "off" really quickly.
 

mangocrazy

Registered User
#7
I'd definitely get rid of all the old petrol in the tank. Modern petrol has a very short shelf life. Like deniski, I have to store my FJ for aound 6 months of the year (the bike is in France and doesn't get used over winter) and always add fuel stabiliser to the petrol and drain the float bowls using the little screws Mr Honda so thoughtfully provided.

At 13K miles you have a beauty. It's not even properly run-in! 17" wheels were standard on the FJ/FK models, but not on the FG/Fh (16"F/18"R), so someone has done you a favour.

Enjoy. (As if you wouldn't...) :)
 

FTM

Registered User
#8
Well I drained the last of the old petrol out and refilled with 5 litres of fresh stuff. The starter spins the engine but sometimes it makes a grinding noise like the starter clutch has lost a few teeth so I stopped trying before I killed it. There is a very faint smell of petrol so I'm thinking petrol isn't getting to the carbs because the smell should be stronger and the engine should be flooded by now. There was a tiny bit of rust in the last few drops of old petrol so next job will be to drain the carbs and clean the filter under the tank to see what comes out. No sorry, the next job will be to get rid of some of the junk in my garage so I have room to work on the bike, there's 3 of them in there now and not much room to move about.

:beer:
 

FTM

Registered User
#10
That could be it mangocrazy, the previous owner said he drained the carbs before he stored it so maybe they are still dry. A lack of a strong smell of petrol is certainly pointing in that direction.

:beer:
 

FTM

Registered User
#11
Primed the carbs by jumping the petrol pump as advised but the starter (sprag) clutch is flucked so I'll need a new one. So that's one starter clutch, one clutch cover gasket. Anything else I'll need? and where is the best place to get them. David Silver don't have a starter clutch listed.

:beer:
 

50th VFR

Registered User
Site Sponsor
#12
Forgot to mention it has 17" wheels on, not sure about the forks yet but the last owner said the wheels were on when he bought it in 91 and he thought they were standard.
Definitely must be wheels from another bike, probably an FJ/FK.

Glad to hear earlier post on bypassing fuel pump relay worked.
 

roadblock

Kernel Fruit and Nut
#13
If the clutch is frozen then you could have a look at post #4 here for a tried and tested way to gently sort a frozen clutch.

EDIT, by clutch I mean drive clutch not starter clutch.
 
Last edited:

mutzy

Registered User
#14
Starter Clutch

Hi,

if the sprag is chinned (un likely on such a low milage bike) you can get a repair kit from WEMOTO on line. The sprag is probably siezed and you would be best trying the advice above before spending the cash:rolleyes:

For an FH:

http://www.wemoto.com/bikes/Honda/VFR_750_FH__RC24/87/picture/Starter_Clutch_Repair_Kit/

In case you find you have an FJ/K (wheels are odd and I don't think that they would fit an FH swing arm or forks?)

http://www.wemoto.com/bikes/Honda/VFR_750_FJ_FK_RC24/88-89/picture/Starter_Clutch_Repair_Kit/

If you repair the sprag please don't forget to use thread lock (Loctite), on the bolts that hold it together, when you rebuild it so that it doesn't wear through the cases as a bolt comes loose!

Hope this helps mate,

Mutzy.
 

FTM

Registered User
#15
Definately a FH (all the numbers check out to a UK VFR750FH), registered in April 87 by the first owner and then bought in February 89 with 8,000 miles on the clock by the person I bought it from. 89-05 it did 5,000 miles and has been SORNed since 2005. All old MOT's to prove mileage. He said it last ran 3 years ago but he hasn't got it to start since then, he's been trying to jump it from his car battery. I think he knackered the sprag clutch trying to start it but I'll find out for sure at the weekend when I take a look at it. I pointed out the wrong wheels and he said they were on when he bought it and didn't know they weren't standard. I'll check fork size later to see if they are from the FJ/FK.
I'm still well chuffed with it even though I haven't got it to run yet.
 

50th VFR

Registered User
Site Sponsor
#17
Differences between FG/FH and FJ/FK

The 1986 VFR750FG Honda initiated what was to become a very successfuland long running range of bikes. The following year (1987) saw the arrival of the VFR750FH which although visually identical to the FG did have several minor engine mods.

The first re-design of the bike was in 1988 with the launch of of VFR750FJ, this bike remained basically unchanged the following year as the VFR750FK.

While sharing the same engine and frame as the FG and FH models there were a number of significant differences introduced on the FJ and FK models.

Engine

Compression ratio was increased from 10.5:1 to 11:1 and bigger valves were fitted. This increased peak power to a claimed 105bhp and peak torque to 7.8kgm at 9000rpm.

There was a complete re-design of the gearshift mechanism to giver smoother gear changing.

The original camshaft mounted ignition trigger was replaced by a crankshaft driven unit.

Forks

Increased from 34 mm to 41mm diameter. Anti-dive retained on left hand fork leg.

Wheels

The 16inch front / 18 inch rear combination were replaced by two 17inch wheels with a new three spoke design using S" shaped spokes. The wheels sported 110/80 Bridgestone G547 front and 140/80 Bridgestone G548 rear.

Fairing

The three part fairing of the FG/FH was replaced by a four part fairing comprising top section, bellypan and two side panels. This made for easier access to the engine. The top fairing incorporated new front indicators streamlined into the fairing and a two position adjustable front screen. Filler panels now covered the gap between the fairing and the frame.

Exhaust

The four-into-two system of the FG/FH was replaced with an all new four-into-two-into-one-into-two system which featured a collector box mounted in front of the rear wheel with right-angled pipework to the two silencers which were fitted with alloy sleeves.

Brakes

The FJ/FK were fitted with improved Nissin callipers, the front units being retained for the FL model.

Footrest/exhaust hangers

The painted metal items on the FG/FH were replaced by alloy units.

Instruments

The instrument layout was revised and a digital clock was added.
 

FTM

Registered User
#18
Wheels are infact the original 16/18 combination, I got confused with another bike I was looking at which had been changed to 17/17 wheels :blush:.
 

FTM

Registered User
#19
Got it started today :) but only on 2 cylinders :mad:. Sprag clutch is shagged so soon I'll be having a look at it, stripping and cleaning the carbs, freeing up the dragging back brake and changing the fluids. The bike is spotless under the fairing :).
 
Top