414-8 magnum

[Fishroe 261]

Got the electrical problems straight now I’m here in this section 

changed fuel filter, put in fresh gas

cranked for 10 seconds 3 different times still no fuel to filter. Does the pump run off of vacuum or mechanical. I’m going to replace the fuel lines to cover that. I verified the fuel valve is working. Bushing is leaking though. Drip every 3 seconds

just for the heck of it I checked compression. Cranked for 10 seconds. Maxed out at 60. Good or bad??

Edited March 11, 2022 by Fishroe

[pfrederi 18,649]

2 hours ago, Fishroe said:

Got the electrical problems straight now I’m here in this section 

changed fuel filter, put in fresh gas

cranked for 10 seconds 3 different times still no fuel to filter. Does the pump run off of vacuum or mechanical. I’m going to replace the fuel lines to cover that. I verified the fuel valve is working. Bushing is leaking though. Drip every 3 seconds

just for the heck of it I checked compression. Cranked for 10 seconds. Maxed out at 60. Good or bad??

Probably mechanical pump  vacuum /pulse were on older 8hp. Compression test with an engine with ACR  (That you Magnum has) are not reliable.

[953 nut 59,896]

Your fuel pump is a better pusher than a puller. Once you have drained the tank, replaced the grommet and installed new fuel hoses you should gravity drain some gas through the fuel hose up at the pump end and then install it on the pump. Lowell @wheelhorseman sells the grommet, may want to replace the valve while you are at it.    https://wheelhorsepartsandmore.com/product/104047-fuel-grommet-wheel-horse/

[Fishroe 261]

10-4 thanks

[peter lena 9,252]

@Fishroe, use some dielectric grease on that  grommet replacement . make the replacement easier , made for that use. pete

[oldlineman 1,537]

I have a 1989 414-8 that I installed an electric pump on . Makes a big difference, others have installed a squeeze primer with good results. both options are an improvement on starting.Check the screen in the tank shutoff valve for obstructions.  Bob 

[Fishroe 261]

1 hour ago, peter lena said:

@Fishroe, use some dielectric grease on that  grommet replacement . make the replacement easier , made for that use. pete

Good idea thanks

[Fishroe 261]

1 hour ago, oldlineman said:

I have a 1989 414-8 that I installed an electric pump on . Makes a big difference, others have installed a squeeze primer with good results. both options are an improvement on starting.Check the screen in the tank shutoff valve for obstructions.  Bob 

Good to know that

i think the screen is ok

since I’m replacing the fuel line I cut it a couple inches from the valve and gas was rolling out of it 

right now I want to see if the motor runs 

there is no bushing left on the throttle shaft top

if it does run it will probably be lean  that’s a guess. Haven’t looked yet but is there a number on the carburetor to locate the right parts

thanks 

 

Edited March 12, 2022 by Fishroe

[tunahead72 2,543]

23 minutes ago, Fishroe said:

... Haven’t looked yet but is there a number on the carburetor to locate the right parts ...

 

I forget if you said, is this a Kohler or a Walbro carb?

 

If it's a Kohler, the number is probably on the top of the mounting flange (where it mounts to the engine), on the right side if you're in front of the engine looking towards the back of the tractor.

 

If it's a Walbro, the word "Walbro" will be clearly visible on top of the carb, but if I remember correctly the model number is marked on the bottom of the flange, almost impossible to read without removing the carb.

 

Either way, once you have the model number, you can find a complete parts breakdown and a lot of other useful information in the carb reference manual:

Engine Kohler Carburetor reference #TP-2377-E.pdf - Kohler - RedSquare Wheel Horse Forum

 

 

[peter lena 9,252]

@Fishroe  after you get running , or before , you might consider  adding a fuel check valve , just before carb , in the 6" vertical  rise section. that would hold the fuel to carb , prevent drain back and make for much easier starts .https://www.amazon.com/EVIL-ENERGY-Return-Petrol-Aluminium/dp/B07ZB42CGT  , have these on 3 kohler magnum engines , 1 electric pump and 2 regular type pumps , all my starts are instant , barely choking  it, cold starts very quick , to normal running .  pete

[Fishroe 261]

I haven’t looked yet tunahead

been playing with this wheelhorse the last couple days. Everything else has been put on the back burner. Catching up to do. 
 

Check valve is a good idea Peter. Might have to do that on both 414’s 

Edited March 12, 2022 by Fishroe

[peter lena 9,252]

@Fishroe  if you do that its easy , measure up the length of the  fuel hose , from pump to carb , keep valve above the  related spring in the area, made up upper and lower line section , installed with dark green size to size spring clamps , make sure arrow is facing up on valve , insuring flow / stop , building it first makes it easy , also add carb and pump  squeeze clamps to each end first , then its just a slide down to end fit. the fuel hold at carb , makes for instant starts , my 3 horses start the same way .  many hours and starts , verifies its working . pete 

[Fishroe 261]

10-4. Thanks

[Fishroe 261]

The magnum has risen from the dead!!

engine runs good 

shifted in all gears  they all seem fine

gear oil needs changing. Got to find part # and order an axle seal though. Engine oil couldn’t have been any blacker. Just for the heck of it I engaged the blades. One or more bearings are locked up. I didn’t get it to mow with anyway. Probably fix that down the road