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Gasoline containing up to 10% ethanol (E10) is acceptable for use in this machine.

The use of any gasoline exceeding 10% ethanol (E10) will void the product warranty.

Operator's Manual

MRT850

532 44 65-34 Rev.1

www.mcculloch.biz

Содержание MRT850

Страница 1: ...containing up to 10 ethanol E10 is acceptable for use in this machine The use of any gasoline exceeding 10 ethanol E10 will void the product warranty Operator s Manual MRT850 532 44 65 34 Rev 1 www mcculloch biz ...

Страница 2: ...stop the unit and disengage the controls quickly Never allow children to operate the equipment Never allow adults to operate the equipment without proper instruction Keep the area of operation clear of all persons par ticularly small children and pets PREPARATION Thoroughly inspect the area where the equipment is to be used and remove all foreign objects Disengage all clutches and shift into neutr...

Страница 3: ... bustion engine and should not be used on or near any unimprovedforest covered brush coveredorgrasscovered land unless the engine s exhaust system is equipped with a spark arrester meeting applicable local laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the state of California a spark arrester is required by law Section 4442 of the Cali...

Страница 4: ... been assembled at the factory with exception of those parts left unassembled for shipping purposes To ensure safe and proper operation of your tiller all parts and hardware you assemble must be tightened securely Use the correct tools as necessary to insure proper tightness FRONT OPERATOR S POSITION LEFT RIGHT Fig 1 1 Hairpin Clip 1 Carriage Bolt 3 8 16 UNC x 1 Grade 5 1 Center Locknut 3 8 16 UNC...

Страница 5: ...MBLY GEARCASE NOTCH HANDLE LOCK VIEWED FROM R H SIDE OF TILLER handles_34 CARRIAGE BOLT SLOT GEARCASE HANDLE LOCK FLAT WASHER HANDLE LOCK LEVER PIVOT BOLT LOCKNUT HANDLE BASE Fig 5 Rotate handle assembly down Insert rear carriage bolt first with bolt head on L H side of tiller and loosely assemble locknut See Fig 5 Insert pivot bolt in front part of plate and tighten Cut down remaining corners of ...

Страница 6: ... hole of shift lever indicator Insert hairpin clip through hole of shift rod to secure CHECK TIRE PRESSURE The tires on your unit were overinflated at the factory for shipping purposes Correct and equal tire pressure is important for best tilling performance Reduce tire pressure to 20 PSI 1 4 kg cm2 HANDLE HEIGHT Handle height may be adjusted to better suit operator See TO ADJUST HANDLE HEIGHT in ...

Страница 7: ...7 MEETS ANSI SAFETY REQUIREMENTS Our tillers conform to the safety standards of the American National Standards Institute CHOKE CONTROL Used when starting a cold engine DEPTH STAKE Controls depth at which tiller will dig TINE CONTROL Used to engage tines LEVELING SHIELD Levels tilled soil OUTER SIDE SHIELD Adjustable to protect small plants from being buried RECOIL STARTER HANDLE Used to start the...

Страница 8: ...re able to shift gears DEPTH STAKE See Fig 9 The depth stake can be raised or lowered to allow you more versatile tilling and cultivating or to more easily transport your tiller Fig 8 depth_stake_2 TILLING See Fig 10 Release depth stake pin Pull the depth stake up for increased tilling depth Place depth stake pin in hole of depth stake to lock in position Place shift lever indicator in counter rot...

Страница 9: ...starting See oil viscosity chart in the Mainte nance section of this manual To change engine oil see the Maintenance section in this manual OUTER SIDE SHIELDS See Fig 10 The back edges of the outer side shields are slotted so that the shields can be raised for deep tilling and lowered for shallow tilling to protect small plants from being buried Loosen nut A in slot and nut B Move shield to desire...

Страница 10: ...thin 1 2 of top of fuel tank to prevent spills and to allow for fuel expansion Do not overfill Use fresh clean regular unleaded gasoline with a minimum of 87 octane Use of leaded gasoline will increase carbon and lead oxide deposits and reduce valve life Do not mix oil with gasoline Purchase fuel in quantities that can be used within 30 days to assure fuel freshness CAUTION Fill to within 1 2 of t...

Страница 11: ...und in rough condition promoting no further growth of weeds and grass See Fig 14 Do not lean on handle this takes weight off the wheels reduces traction and may cause the tiller to skip over the ground Alwayslowerthedragstakewhenusingtheforward rotating tine drive tire_1 HAIRPIN CLIP Fig 15 OUTER VIEW OF TIRE tire_2 Fig 16 INNER VIEW OF TIRE CLEVIS PIN HAIRPIN CLIP ADJUST WHEELS FOR CULTIVATING Se...

Страница 12: ... Check tine operation Check for loose fasteners LUBRICATION Keep unit well lubricated See LUBRICATION CHART LUBRICATION CHART MAINTENANCE SCHEDULE FILL IN DATES AS YOU COMPLETE REGULAR SERVICE Check Engine Oil Level Change Engine Oil Oil Pivot Points Inspect Air Screen Inspect Spark Arrester Muffler Clean or Replace Air Cleaner Cartridge Clean Engine Cylinder Fins Replace Spark Plug B E F O R E E ...

Страница 13: ...lti viscosity oils will result in increased oil consumption when used above 40 F 4 C Check your engine oil level more frequently to avoid possible engine damage from running low on oil Change the oil after every 25 hours of operation or at least once a year if the tiller is not used for 25 hours in one year Check the crankcase oil level before starting the engine and after each five 5 hours of con...

Страница 14: ...P 1 Grease CLEANING Do not clean your tiller when the engine and transmission are hot We do not recommend using pressurized water garden hose etc to clean your unit unless the gasket area around the transmission and the engine muffler air filter and carburetor are covered to keep water out Water in engine will shorten the useful life of your tiller Clean engine wheels finish etc of all foreign mat...

Страница 15: ...ve two 2 screws from side of belt guard Remove hex nut and washer from bottom of belt guard located behind wheel Pull belt guard out and away from unit Replace belt guard by reversing above procedure TIRE CARE CAUTION When mounting tires un lessbeadsareseated overinflationcan cause an explosion Maintain 20 pounds of tire pressure If tire pressures are not equal tiller will pull to one side Keep ti...

Страница 16: ...MUST BE IN GROOVE ON TOP OF IDLER PULLEY NOTE POSITION OF BELT TO GUIDES Check belt adjustment as described below Replace belt guard Reposition wheel and replace clevis pin and hairpin clip GROUND DRIVE BELT ADJUSTMENT See Fig 24 For proper belt tension the extension spring should have about 5 8 16 mm stretch when tine control is in EN GAGED position This tension can be attained as follows Loosen ...

Страница 17: ...will rotate rearward from above TRANSMISSION TINE 3 1 2 MAX TINE Fig 25 TINE REPLACEMENT See Figs 25 26 and 27 CAUTION Tines are sharp Wear gloves or other protection when han dling tines A badly worn tine causes your tiller to work harder and dig more shallow Most important worn tines cannot chop and shred organic matter as effectively nor bury it as deeply as good tines A tine this worn needs to...

Страница 18: ... throttle lever up until it touches high speed stop and hold in this position Tighten cable clamp screw securely TO ADJUST CARBURETOR Thecarburetorhasbeenpresetatthefactoryandadjustment should not be necessary However engine performance can be affected by differences in fuel temperature altitude or load If the carburetor does need adjustment contact your nearest authorized service center departmen...

Страница 19: ...belts if necessary See belt re placement instructions in the Service and Adjustments section of this manual Lubricate as shown in the Maintenance section of this manual Be sure that all nuts bolts and screws are securely fastened Inspect moving parts for damage breakage and wear Replace if necessary Touch up all rusted or chipped paint surfaces sand lightly before painting ENGINE FUEL SYSTEM IMPOR...

Страница 20: ...e air screen 10 Clean engine air screen 11 Dirty clogged muffler 11 Clean replace muffler 12 Carburetor out of adjustment 12 Make necessary adjustments 13 Poor compression 13 Contact an authorized service centerdepartment Engine overheats 1 Low oil level dirty oil 1 Check oil level change oil 2 Dirty engine air screen 2 Clean engine air screen 3 Dirty engine 3 Clean cylinder fins air screen and mu...

Страница 21: ...21 SERVICE NOTES ...

Страница 22: ...22 SERVICE NOTES ...

Страница 23: ...23 SERVICE NOTES ...

Страница 24: ...www mcculloch biz 02 08 12 DH Printed in U S A ...

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