Correct float height for vm22ss

[Samxboy]

So what's the correct float height?. I see 26mm in the service manual and 24mm in the reference data. She's a 1978 base model with the vm22ss carbs. There's gas leaking from the overflow on 3 &4 carbs.... just a dribble but clearly not right. I had set the floats to 24mm but that's not working. Going to 26mm should lower the fuel so that's what I'm going to try but anyone want to advise their experience..... thanks

[zed1015]

GS550 VM22ss is 24mm + or - 1mm.
Overflowing is more likely to be due to leaking float valves.

[Samxboy]

GS550 VM22ss is 24mm + or - 1mm.
Overflowing is more likely to be due to leaking float valves.

This is straight from the service manual. Just don't like contradictory information. Appreciate best test is to do a tube test from the drain plug but I'll try the 26mm float height setting first. All the float valves are new, which doesn't mean nowt but suggests the problem lies elsewhere.

[zed1015]

Carb spec sheet lifted from official Suzuki site..
The VM22 specs are top of the list..
24mm float height.
New valves don't guarantee they won't leak especially if they are pattern items.

Year	Country	Model	Carb	bore	ID	idle rpm	idle +/-	fuel level	float height	main jet	main air jet	jet needle	needle jet	pilot jet	throttle valve	bypass	pilot outlet	valve seat	starter jet	pilot screw	pilot air jet	cable play
77-79	US	GS550L	VM22ss	22	47110	1150		4.0 +/-1.0	24 +/-1.0	80		5dl35-3	o-6	15		1	0.6			1
80-82	US	GS550	BS32ss	32	47160	1100		5.0=/-0.5	22.4+/-1.0	92.5	1.6	4bel2	x-6	40		0.9,0.7,0.7	0.7	2	35	3.5	150
80-82	CAN	GS550	BS32ss	32	47170	1100		5.0=/-0.5	22.4+/-1.0	92.5	1.6	5f42-3	x-6	40	135	1.0,0.8,0.8	0.7	2	35	3.5	120
83 -	US	GS750e	BS32ss	32	31300	1150		5.0=/-0.5	22.4+/-1.0	117.5	1.7	5d12	y-6	37.5		0	0.7	2	45	pre-set
85	US	GS700e	BS32ss	32	06A00 (06A10 CA)	1150		5.0=/-0.5	22.4+/-1.0	122.5	1.7	5c-28	y-5	37.5		0	0.7	2	45	pre-set
82	US	GS650 GZ/GLZ	BS32ss	32	34300	1100		5.0=/-0.5	22.4+/-1.0	110	2	5c45	y-7	42.5	135	0.8,0.7,0.8	0.7	2	45	1.5	160	0.5 - 1.0
83	US	GS650GD	BS32ss	32	34300	1100		5.0=/-0.5	22.4+/-1.0	110	2	5c45	y-7	42.5	135	0.8,0.7,0.8	0.7	2	45	1.5	160	0.5 - 1.0
83	US	GS650GLD	BS32ss	32	34390	1100		5.0=/-0.5	22.4+/-1.0	107.5	1.2	5d59-3	x-2	47.5	135	0.8,0.8,0.8	1	2	32.5	2.5	160	0.5 - 1.0
83	US	GS650 MD	BS32ss	32	34390	1100		5.0=/-0.5	22.4+/-1.0	110	2	5c45	y-7	92.5	135	0.8,0.7,0.8	0.7	2	45	1.5	160	0.5 - 1.0
83	CAN	GS1100ED	BS34ss	34	49360	1050		5.0=/-0.5	22.4+/-1.0	112.5	1.2	5d9-3	x-2	47.5		0.8	1	2	32.5	2.5	160	0.5 - 1.0
??	US	GS450ED	BS34ss	34	44400	1200	50	5.0=/-0.5	23.0+/-1.0	120	0.7	5dx87	o-6	45		1.0,0.8,0.9	0.7	2	32.5	2	135
??	US	GS450LD	BS34ss	34	44460	1200	50	5.0=/-0.5	23.0+/-1.0	115	0.7	5cdt60	o-6	45		1.0,0.8,0.9	0.7	2	32.5	2	145
??	US	GS450TXD	BS34ss	34	44460	1200	50	5.0=/-0.5	23.0+/-1.0	115	0.7	5cdt60	o-6	45		1.0,0.8,0.9	0.7	2	32.5	2	145
??	US	GS450LF	BS34ss	34	44460	1200	100	5.0=/-0.5	23.0+/-1.0	115	0.7	5cdt60	o-6	45	95	1.0,0.8,0.9	0.7	2	32.5	pre-set
??	US	GS450(other)	BS34ss	34	44110	1200	100	6.5=/-0.5	22.4+/-1.0	115	0.6	4c2	y-6	17.5		0.8	1.1	2	30	pre-set	1.6
77 -79	US	GS850	VM26ss	26	45060	1050	100	3.0 - 5.0	24 +/- 1.0	102.5		5dl36-2	o-6	15		0.8	0.6			"5/8	1.2
80	US	GS850	BS32ss	32	45120	1050	100	5.0=/-0.5	22.4+/-1.0	115	1.7	5d57-3	x-6	42.5		1.0,0.8,0.8	0.7	2	32.5	3.5	200
80	US	GS1100LT	BS34ss	34	49200	1050	100	5.0=/-0.5	22.4+/-1.0	107.5	1.2	5d58	x-1	45		0.8,0.8,0.8	0.9	2	32.5	pre-set		0.5 - 1.0
81	US	GS1100EX	BS34ss	34	49200	1050	100	5.0=/-0.5	22.4+/-1.0	107.5	1.2	5d58	x-1	45		0.8,0.8,0.8	0.9	2	32.5	pre-set		0.5 - 1.0
82	US	GS1000SZ	BS34ss	34	49300	1050	100	5.0=/-0.5	22.4+/-1.0	110	1.2	5d58	x-1	45		0.8,0.8,0.8	0.9	2	32.5	pre-set		0.5 - 1.0
82	US	GS1000EZ	BS34ss	34	49220	1050	100	5.0=/-0.5	22.4+/-1.0	110	1.2	5d58	x-1	45		0.8,0.8,0.8	0.9	2	32.5	pre-set	170	0.5 - 1.0
83	US	GS1000SD	BS34ss	34	49350	1050	50	5.0=/-0.5	22.4+/-1.0	112.5	1.2	5d58	x-1	45		0.8,0.8,0.8	1	2	32.5	pre-set	160	0.5 - 1.0

[Nessism]

There is conflicting information in the factory Suzuki service manual. 26mm is called out in the carburetor service section, but 24mm in the specs table.

Float height is just an approximation anyway. The thing that matters is fuel height, as measured by the clear tube method. The manual has conflicting info on that too: 3-4mm in the carb section, and 4mm + 1mm in the specs section. Anywhere 3-5mm will be fine, though.

[Rob S.]

Zed's list shows a (1982) model "1000EZ"?

[Nessism]

Zed's list shows a (1982) model "1000EZ"?

Correct. Surely you know that "Z" stands for 1982 in Suzuki nomenclature.

[Rob S.]

Correct. Surely you know that "Z" stands for 1982 in Suzuki nomenclature.

It's the "1000" that's got me puzzled. A 1000SZ (Katana), I'm aware of, but not any 1000E in 1982.

[KiwiAlfa156]

It's the "1000" that's got me puzzled. A 1000SZ (Katana), I'm aware of, but not any 1000E in 1982.

I've never heard of a 1000EZ either, thought they were all 1100 or 750?

[GregT]

Just to confuse things a little more. there's a video of a "Suzuki gs1000EZ" on utube apparently from Germany. And it's very obviously an 8 valve motor with probably VM22's fitted. And no, I've never heard of a GS1000EZ either. Doesn't mean it didn't exist though as Suzuki were known to produce odd models for different markets.