Search results

rough ride, handle poorly, high center of gravity, VERY long belt from engine to mower deck, NOISY, run a little warm (operator gets warm from radiator heat being directly behind them). Saw some frame welds break on them from time to time although not frequent. Pulley failures, belts...

use a M12-1.25 thread chaser if you haven't already got it done. Thread chaser doesn't cut threads, but it does a good job of cleaning up existing threads. I have used taps quite often in the past and on several occasions, they'll cut a new thread before it catches an existing thread and then...

#2 has an automatic compression release that "engages" at "cranking speed". That said, "Cranking speed" can be altered by using a jump starter or whatever. IIRC the ACR disengages at 220-250 RPM and the starter will crank it faster than that with a good hot battery. So when doing a...

you really need the special tool to get the clutch back together... also do not force it because you WILL crack the case if you try. BTDT. Once that happens you have to replace the transmission which isn't cheap. It should be, as many as Kubota has sold over the years...

they use plastic idlers. OFtentimes one of the idlers will seize the bearing and the belt just melts away at the plastic idler. Usual complaint, belt breaks. Put a new belt on, and it is noisy and/or vibrates when the brake is released. Idler almost every time. have also seen a couple with...

I don't find it that difficult, but certainly not as easy as most of the zero turn mowers. Remove the mower deck....and if you can lift the front and rear wheels, maybe 18-24" and support everything, it's a lot easier. Lot of parts need to be removed but once it's all out of the way you can...

I'm not familiar with that particular engine but the FD620's used plastic water pump gears which often failed. Impeller not spin, it don't circulate water, and don't cool very well. also had a number of them with broken cam gears too...and broken rivets that hold the plastic cam gear to the...

the fuel system has a supply side (everything from tank to pump) and the pressure side (pump to engine). Often we forget to look at the supply side. I've seen a ton of mowers with dirt/grass inside the tank which plugs the pickup tube, have seen a bunch of bad boys that had trash from the tank...

I was reading from top down and that was my first thought too. The fuse holder or wiring. Glad you got 'er figured out! (I have had to replace a few of those bad boy fuse holders...their harnesses are trash).

maybe a part damaged when lifting the mower for service? Like bent deck shell , etc. Look it over closely....

don't use ohm test, use voltage drop test. It's completely different than an ohm test. as another poster said, never assume anything. The word 'assume' is an acronym for "make an A&& out of u and me".

their wiring diagrams suck. They'll give you an idea, but that's about it. The ONE thing that always got under my skin with Bad Boy is the wiring. IF there are, for example, 20 wires in the entire harness, 15 of them are yellow which makes it "fun" to figure out. You get the idea. If I had...

starving for fuel is the #1 cause. Follow your fuel lines, find the shutoff valve and remove it from the tank. Clean it out. Blow all the fuel lines out while you have it off.

pull the air filter off. Look down inside. Is it dusty? If it is, the engine is dusted.

kohler is a little noisier, and generally will spend a little more time being maintained/repaired. Kawasaki builds a good engine as well. They are a little smoother running, slightly quieter-have a different "tone". I prefer kawasaki, but own one with a kohler. Either one, you have to stay...

this highlights why I have always said that bad boy mowers are good mowers, built heavy, cut nice, but they lacked in some areas. Have you tried calling bad boy yet? They have a few guys that can help you figure this out. dealer tech is correct-partially. ZT's are totally dependent on the...

Bad Boy can supply you with a "diagram", however it's VERY crude, as is their wiring in that vintage. Poor quality stuff back then. Often see broken wires, both visible AND broken conductors inside the insulation. So, with that, inspect your wiring very well-especially the control arm safety...

those mufflers are usually not exclusive to bad boy. Look at the muffler body and see if it has any numbers on it. Sometimes they do, where the actual manufacturer stamps it. If so, just google it. if it stamped with bad boy number, they probably make it in house. It may very well have a...

They are serviceable. They made "improvements", makes maintenance a little "easier", so they say. For a homeowner, harder but we won't go there. Just like some of the late model 10 speed transmissions with no way to check the oil level. If it ain't leaking, don't screw with it is what they...

I ain't never had much luck cleaning those briggs and scrapiron carburetors (nikki I think they are?). Junk. Seriously. I have replaced a few of them, though.

they've not cut quality to increase profit, they've cut quality to compete with the other brands. I've seen the seats get loose in the head, then the seat bounces up and down and wears the head. Then you take the head off, can't see a thing wrong with it other than the valve is sitting deeper...

This is correct. There is "usually" a sticker on the top of the deck that advises how to properly adjust the anti-scalp rollers.

can you post a picture? I have a feeling you're talking about the plug that is pressed into the back of the block, below the injection pump. By the way there is only one "A" in kUbota.

I did. That’s how I got the parts I have on hand. Dealers local all day same part number should work. Two dealers had one on the shelf to compare and they’re identical. I fixed it. I machined the original out and made a bushing to bush the hole back to size. Took all day instead of 45...

The sticker is missing. That’s the other issue.

Loose steering. Diagnosed as both the upper and lower steering bushings being very loose. They are plastic. Ordered new upper and lower bushings. The lower is an upgrade kit, replaces the plastic assembly with metal. Yay. Upper works fine, it is plastic just like the original. Here's the...

they considered them "commercial", but at the time when I first got into the bad boy business, if you used it commercially, it had zero warranty. A lot of commercial guys registered them in their personal name to get around that. But what would happen was they'd show up a few months later with...

I sold/serviced OEM equipment for over 30 years in that 30 years I had TWO bad NGK spark plugs. TWO. Out of...gosh...tens of thousands? not to say it doesn't happen. Because it does/and did. Just not frequently. Champion I had lots of those bad, right out of the box. Tested or not, they...

crap design, IMO bad boy knows it too. How many hundred have I fixed? Hmm...I forget. it's not always but often related to mowing with the deck riding the ground, e.g., mowing too low, rough terrain, getting up against fences/curbs/sidewalks, sometimes worn out/unbalance blades cause...

possibly starter issue kohler updated the starter a few years ago, it's about 45% more powerful now, the shaft is larger as well. Often the old style ones (if yours is original it's probably the old style) would fail, magnets come loose inside, shaft bushing wear out/break, sometimes the...

maybe relay related. I've had to replace a bunch of them. At one point they wouldn't sell you a relay so we had to put entire harnesses on a few of them.

when you jump the solenoid you effective bypass every single switch on the machine. So that is not a good test of the switches, it only tells you that there is sufficient current flow between the battery and the starter to crank the engine over. The briggs will run because of how the coils are...

fix it right see if the regulator is charging properly if it's not find out why the regulator has several wires, I think 6? 2 of them (same colors) come from the generator, then one is ground, one is ignition (this turns the regulator "on"), and one is the charge wire (usually red). If...

how much fuel is getting into the crankcase? If a lot, check engine compression. If a little check engine compression. 450 psi+ is what I like to see. They usually won't run very well once they get much below 400. I think low spec is 380. If it's low look for valve clearance issue first...

bad boy bends the frames mostly in one piece. No transmission brackets are bolted on. So to use those BD brackets you will have to cut the frame off. Lot of work getting everything lined back up. Linkages shouldn't too much issue, but getting the proper pulley alignment might be. On...

oil additives are kinda important cars are what most oils are designed for, and they have completely different sets of additives for them--and often lack additives that other types of engines need. flat tappet cams are no longer used in cars, thus the reduction of ZDDP in automotive-specific...

if the exhaust gaskets are falling apart, that would account for sparks outta the pipe valve clearance can have an affect too

the ZG327 engine is a good engine as long as it has oil in it and the flywheel screen doesn't get plugged up (overheat). It's not a Kohler. It's not a Kawasaki. It's a Kubota gas V-twin, which was a design joint effort by Kubota and Robin (aka Subaru). Kubota supports it fully instead of the...

the bulletins were fix-as-fail meaning if it wasn't broken they weren't fixing them the psb-2018-020 (IIRC) wasn't a recall but a reliability update that many including myself took advantage of. It was a 3 or 4 part repair, took the better part of a day to do all of it. I did 2 a day for 4...

Briggs. I'm assuming 25hp V-twin. Nikki carburetor aren't they?? Take it off, throw it into the next county and buy another carb. And gaskets. Did many of them. You can clean them til you're blue in the face and sometimes they just don't cooperate. Those were the only carbs I never could...

they get hot if you mow at dark, sometimes you can see the pipes have a very dull glow to them. That is normal. if you have a cracking problem at those pipes, check your engine mounts. Kohler engines especially. also failing ignition coils, e.g.,retarded ignition timing, can cause the...

cutting while wet or damp is the usual cause of this. Second most common is mowing at part throttle. It has to be full throttle wide open to cut grass and no exception. I like to see 3450-3600 RPM with no load on the engine (blades turned off) at operating temp. Often the bad boy mowers will...

not on a MZ magnum, but have seen plenty of it on the ZT's and a few ZT Elites. Bad Boy will take care of you if you're still in warranty. Will it do it again? I dunno. How rough is your yard?

and that is exactly what warranty is there for. To protect you, the consumer, from defects in manufacturing. Kawasaki is usually pretty good with warranties. Just don't try to pull a fast one on them, e.g., let the gas sit in the tank for a year or so then claim a 'bad carburetor". I've been...

if you get up out of the seat, park brake on, pto OFF, and engine dies you may have a brake switch issue. IIRC the brake switch on these is a NO/NC switch. 4 contacts. 2 are normally closed (NC), the other two normally off (NO). Activating the plunger turns the NO switch to a closed circuit...

yes there's nuts on the bottom. Dumb design. But in the assembly plant it makes sense. One guy holds the nut from the side (frame turned sideways) and the other guy installs the solenoid. LOL-seriously, that's how it was done last time I was through there. I have long arms and I can reach...

yeah look at the pulleys. Take the key out of the ignition and stick it in your pocket. Now get up under the mower, turn the blade belt and watch the belt run through the pulleys. Pretty common to get debris in the groove of the clutch pulley and it'll cause vibration, big time. Usually can...

yep if the deck is shaped properly it doesn't really get any clipping buildup. The old Deere Freedom 42" decks (ones that had timing belts) were like this and it was really rare for them to have excess buildup. But those decks had other problems...that timing belt.... Do you have a pressure...

put the throttle lever on the fender to full throttle, then back it off of full by about 1/8" loosen the cable's clamp screw on the engine's linkage plate, then pull the cable as far as you can, then tighten the screw while you're continuing holding pressure on the cable. rpm should be 3600...

that'll work what keeps water out? Most folk around here just leave them in the middle of the yard when they're done mowing so when it rains, water gets in the fuel through the holy fuel gauge. bad boy used a cheap chincanese fuel gauge that wasn't compatible with oxygenated fuel and UV...