OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Honda Engines Honda GV400 problem

Hi All, Can I ask for advise please.
The engine on the cox mower is a Honda gv400, I would like to replace the carburetor but I'm not sure where to buy it. I've seen one on ebay, but I'm not 100% if its the same carb for this model.



The engine seems like its sputtering. I have missing 2 gaskets for both ends of the carbs, i tried using cardboard on one end.

the carb is thoroughly cleaned, it has new pin, and the holes in the screws are cleaned as well.



Btw, can you help me identify what model is this mower? And if manuals are available?


Thank you for all your inputs.

G'day artxty


This Cox mower is called a Compact Tractor / 12 hp , ( 09M7 ) it's build date is between 1987 and 1990.


Not sure if this manual will be of help to you, http://www.coxmowers.com.au/wp-content/uploads/2012/08/25-09F3-09B6-09J6-09M7-Compact-Tractor.pdf

eBay carby, https://www.ebay.com.au/sch/i.html?...arb+For+HONDA+GV400+GV+400+&_sacat=0

https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/75430/honda-gv-400-engine-11-hp.html

Sounds like the carby has been completely dismantled and cleaned similar to this video below .I haven't used the
aftermarket carby on one of these 12 Hp motors to know how well they work .



Cheers
Max.

Hi Max,
Thank you for your reply.
i shall try and get a replacement carby from ebay.

ebay carbi , are ok but the plastic choke part doesnt fit but you can still use the carbi if you are willing to feel for choke lever with fingers

Hi all, i was able to change the carby bought from ebay, also changed most of the gaskets and its running now.

however i noticed the belt needs changing, butnon the manual is says sv14.

how do i search for the right belt for this mower?
i noticed there are 2 belts.

thank you.

Artxty, if you compare the blurb in each of these GA spares listings (for v07 or v08 belts listed in parts list) hopefully it might give insight.

As Max has identified it as a 09m7, I would suggest this one https://www.gaspares.com.au/products/BELB50?

The other one https://www.gaspares.com.au/products/BELB51?

Plus the SV14 drive belt common to all of them https://www.gaspares.com.au/products/BELB64?

Hi Tyler, i really appreciate your help. thanks for the links on the belts. apologies if im asking too much as im just a newbie.

btw, can i ask what type of chain should i order for this mower?

i soaked the chain in rust remover, then this morning i think its old and brittle and starts to crack.

i noticed the chain is a little bigger than the normal bike chain, and smaller than a motorcycle chain.

thanks in advanced.

[img]https://ibb.co/LJRXWWp[/img]

I think this is the chain?

https://www.ebay.com.au/itm/Cox-law...aces-AM018-The-Narrow-Chain/151975902836

No worries

Looks like you are right

here is GA link, you mower is listed
https://www.gaspares.com.au/products/CHM1656?

Here is a link to the GA chain CLICK HERE

I noticed that the larger chain is also labelled as AM018, would that be same as this one? thanks again.

https://www.ebay.com.au/itm/151975902952

I think who ever wrote that ad must have got their wires crossed

The 901 is the wider chain

Hi. I have a GV400 engine on an old Masport self-propelled mower/slasher which I recently bought. As a sweetener, the seller gave me a new carby he bought from a 3rd-party source, to replace the existing original one on the Honda.
I did not like the look of the new carby, just not a quality product and nothing like the original.
I decided to fully strip, properly clean and service the original carby, and guess what? Now the engine actually starts after the first pull every time.
BTW, the video in the first post/thread shows that the black insulator/spacer is in between the air cleaner elbow and the carby, but should be in between the carby and the intake elbow to the engine, as shown in the April 1979 Honda Shop Manual on P27.

hi RodP, by any chance you can share the manual or how can i get a copy of that shop manual? thanks

Hi artxty,

I purchased the manual online from one of the sites promoting and selling the original manual. As it turned out, the asking price was about US$18.00, but after the delivery fee, conversion to A$, then GST, etc, it ended up at about A$80.00. Delivery was about 10 days.
This manual also includes the two supplements.
Cheers, R

Hi RodP, may I know the title of the manual and i'll google it, or if you can share the link? thank you.

Hi artxty,

As these are sold by individuals as one-off sales, the seller of my manual probably has no more available.
Below are four sites I have found via Mr G that may still have one for sale:

https://www.ebay.com/itm/Honda-Genuine-Shop-Service-Manual-GV400-GV-400-K1-KI-/254190335751?_ul=IN
This does not appear to include the supplements

https://www.amazon.com/Honda-Engine-Service-Repair-Manual/dp/B00D46TPGC
This has a different cover to mine but appears to include the supplements K0 & K1

https://picclick.com/Honda-GV400-Engine-Service-Shop-Repair-Workshop-Shop-373608998815.html
This appear to include only the K0 supplement and not the K1

https://www.ebay.com/itm/3828712353...0&campid=5338722076&toolid=10001
This appear to include the supplements K0 & K1 and has the same Publication No as mine

Looks like eBay is the place to start.

Cheers, R

thank you.

Hi all,

Can I ask for assistance how to remove the two belts?

do i need to remove the back wheel axle or is there any shortcuts?

thank you.

reference photo:
[img]https://ibb.co/qJvSHdM[/img]