The Gravely ZT HD Zero Turn Mower is the top - selling machine in its class , but that ’s not to say payoff do n’t come up up now and again . We ’ve compiled a inclination of the 10 most vulgar government issue that beset the Gravely ZT HD Zero Turn Mower . We ’ve also include some troubleshooting tips and solutions that you may work through whenever problems arise .

Motor Doesn’t Start

The only matter unfit than a mower that lay off working in the middle of a mowing line of work is a mower that wo n’t start at all . Here are a few things that could be hold back your machine from start :

Fuel Issues

Check to check that that your lawn mower ’s fuel cooler has passel of gas . Take care to remove any fuel left over from a previous class ’s mowing season . Gasoline tends to lose its potency over prison term . Moreover , older fuel is more susceptible to pollution .

Check to see if the fuel degree is going down at a rate that is not consistent with your usage . There ’s a good chance a leaky fuel tank is leave you with an inadequate amount of gas . Signs of a fuel leak include burnt patches of grass , a hard fuel odor , and unexplained fuel going .

Carefully analyse your mower ’s fuel tank and all of its accessory ingredient . Gas may be leak from the tank , line , heart , carburettor , valve , gasket , or cap . The event may also be related to a stuck float acerate leaf , a faulty fuel shut - off valve , or a malfunctioning fuel pump . `

You ’ll want to good inspect and essay each part so that you may pinpoint the specific topic plaguing your machine . Stay the course , and try not to get frustrated . There are several division to a lawn mower ’s fuel organization . Each piece will need to be inspected before it can be give the sack from your consideration .

Faulty Battery or Battery Connection

A Gravely ZT HD Zero Turn Mower will cease to start when there is a pitiable link between the battery and the assault and battery cablegram . If a quick tightening job does n’t adjudicate the issue , you ’ll have to study the possibility that you ’re issue is a drained battery .

While Gravely lawn mower can be jump - started , the manufacturer strongly suggests against this practice . A replacement barrage fire should be relatively inexpensive and a much dependable pick . According to the experts , most Gravely parts are estimable for 2,000 hours of use . After that dead batteries and other small issues are not rare .

Bad Fuel Cap

A non - venting fuel chapiter may be disrupting your mower ’s fuel stream and keeping it from starting . Remove the fuel cap . Then start your mower . If the car starts , then it ’s most likely that the fuel cap is causing some sort of occlusion . Use a telegram brush to absent rubble from the gas capital ’s vent .

Plugged Air Filter

If your engine is start rough or not starting at all , it may be a sign that you necessitate to replace your mower ’s melodic line filter . An overly soiled air filter may be keeping your engine from turning over swimmingly . Keep in head that merely slay an airwave filter is never an option . Air filters keep harmful dirt and debris from record a mower ’s locomotive .

According to Gravely , a lawn lawn mower ’s air cap should be replaced after 50 hours or approximately one year of usance . When you ’re replacing the tune filter , be sure to pass over down the caparison that surround the filter . Remove soil and debris to be sure that they do not enter the machine ’s aviation intake valve .

Issues Within the Fuel Line

A clogged or damage fuel personal line of credit may be keeping your lawn mower from come the fuel it necessitate to start . Inspect the fuel line , fuel pump , and fuel filter for defects and blockage .

Dirty Carburetor

Lawnmower carburetor typically become dirty with economic consumption . Over time , this may prevent a mower from being able to the right way regulate fuel . unplug your lawn mower ’s carburettor . employ carburetor cleaner to remove obstinate gunk . There are plenty of on-line resource on how to take out , clean , and replace Gravely carburetors .

Faulty Spark Plug

A faulty spark stopple may be the matter keeping you from your landscape gardening duties . Use your user ’s manual to turn up and distinguish your lawn mower ’s glint plug . Visually visit the component . bet for obvious defect and signs of wearable . Use a wet wire brush to take out any obtrusive buildup from the exterior of the twinkle plug . If the arc plug is exceptionally raddled , you ’ll require to replace it . You ’ll also desire to inspect the glint wad connection before you continue to troubleshoot your railway locomotive ’s issues .

Motor Smokes

A smoking lawn lawn mower is an alarming sight . It ’s also an obvious signaling that a lawn mower should be power down . In the case of a smoking mower , you must rule out any minor matter before moving on to the big ones . Keep a close eye on the colour of the smoke , as it may help oneself you to well name the rootage of the issue .

Your engine may also be fume because there is too much or too short oil colour in the fuel . Be sure to make time for even oil changes . check off out thisvideoto see how a Gravely mower ’s oil is deepen .

Another common cause of railway locomotive smoke is an excessively rich fuel salmagundi . When this is the issue plague a machine , the smoke in question is usually moody black . Keep in mind that your locomotive engine may be also running rich because one of the mower ’s piston rings is worn or the engine gasket is bad . Black heater is also sometimes a preindication of a clogged air filter .

Engine Running Rough

A harsh - run locomotive engine can be induce by everything from a poorly positioned choke control knob to a damage motor element . Check that your lawn mower ’s choke is place to the right field . If it is n’t , place it in the off position . Then reset your mower ’s locomotive . diagnose an engine issue is going to be much more difficult . All your engine - related issues should be delegated to a professional technician .

Many Gravely owners also kvetch that their lawn mower vibrate . A especially bouncy lawn mower may be the product of poor - quality mounting thunderbolt , defective ball bearings , or broken angle bracket .

If all else fails , contain your air filter . A dirty or choked melodic phrase filter cartridge can cause a mower to run for rough . Moreover , air filter should be replaced regularly .

Poor or Uneven Cuts

Several things could be causing your Gravely to geld poorly . First and foremost , you ’ll want to delay to see that there is enough air in your mower ’s tires .

If the tire make it past your inspection , the issue may be more closely related to the blades themselves . Dull or crumpled steel will produce scratchy cut . Blades are easy damage by rocks and roots . Check to check that that your mower ’s blades are sharp and square . If your lawn mower ’s blades are not in skillful shape , you ’ll need to have them sharpened or replaced . Never attempt to clean up your blades on your own . bent on or pull strings blade are extremely hazardous . They have the potential to drop off off and injure nearby the great unwashed and animals .

Faulty spindle bearings are another possible lawsuit of those uneven cuts . Check out thisvideoto see how to withdraw and put in raw spindle bearings .

You may also find that the blades are malfunctioning because there is an excessive amount of rubble stuck in the mower ’s cut deck of cards . turn back out thisvideoto see how sordid a Gravely ’s deck can become after a year of service .

Blades Won’t Engage

When a Gravely ZT HD Zero Turn Mower ’s blades fail to engage , it ’s often a sign that something is work faulty with the machine ’s belt . A busted , stretch , or on the loose belt will get out a lawn mower stuck in first train . This issue could also be due to a rugged hold , a incorrect PTO electrical switch , or a fail connection between two parts . Use a electric potential meter to verify if there is power on the stamp battery side of the switch . Move the meter along the wire route to identify any potential roadblock .

Mower is Noisy

unjustified lawn mower noise is one of the most common and frustrating exit reported by Gravely lawn mower owners . Loud screeching sound often indicate that something is run wrong with a lawn mower ’s bang . If you put back the knock but the noise persist , you ’ll want to inspect your mower ’s blade and decks for blemish . Clanking alloy sounds typically stanch from loose or damage blade . Your lawn mower may also be rattle because a slice is not connected . Most interference takings are easy to resolve . As always , trouble-shoot takes lots of patience and ingenuity .

Mower Moves When the Engine is Off

A move but off lawn mower may be due to a faulty parking brake . Parking pasture brake issues are some of Gravely ZT HD Zero Turn Mower users most ofttimes experienced issues .

Engine Overheating

Gravely ZT HD Zero Turn Mowers tend to overheat when their airwave filter are clogged and/or their cooling fan are break . A buildup of grass and other debris may also be keeping zephyr from run through your engine ’s whorl . Of course , your mower may also be melt live due to a want of adequate and clean oil .

Mower Suddenly Ceases to Move

You ’re journey along in your mower when the machine suddenly ceases to move frontwards or backward . A lawn mower that defy to move is surely problematic . The transmission belt or transaxles are likely wrong . If that ’s not the casing , you might have a break down spring or pulley .

Issues such as this are gentle to settle , but they require in - depth cognition and immense attending to detail . We commend that you call in a qualified technical school . They ’ll be able to save you a flock of time and stress . get hold of your local Gravely dealer and schedule a time for a repair .

Mower Has No Suction

Is your mower shin to gather up leaf and dope clippings ? If so , you may desire to inspect each part of your mower ’s mulching outfit to be certain there are n’t any outlying block or faulty connections . When the ZT HD Zero Turn ’s sacking system is make , it leave yards completely costless of debris .

If the consequence remain and no clog are encounter , there ’s a dependable opportunity you have a malfunctioning vacuum ticker or broken vacuum hose . Check to ensure that all region of the vacuum system are properly connected and amply functional .

Final Thoughts

Do n’t countenance this list of nonaged issuance discourage you from purchase a Gravely Zero Turn lawn lawn mower . This beloved dick make an excellent accession to any arsenal of landscaping tools . Most of the issues that arise with this lawn mower are gentle to troubleshoot and resolve . you may avoid many of the mower ’s most common problems by stick to a alimony agenda and adhering to the manufacturer ’s usage guidepost . Should a trouble arise , you could use this template to pinpoint and possibly even conclude the effect .