McCulloch MC12527ES Service and Adjustments, To Adjust Snow Thrower Height, Chute Deflector

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SERVICE AND ADJUSTMENTS

WARNING: To avoid serious injury, before performing any service or ad- justments:

1.Be sure the on/off switch is in the OFF position.

2.Remove safety ignition key.

3.Make sure the augers and all moving parts have completely stopped.

4.Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug.

To replace the capscrew/shear bolts:

1.Disengage all controls and move throttle control to STOP position. Wait for all moving parts to stop.

2.Remove safety ignition key and disconnect spark plug wire from spark plug. Place wire where it cannot come in contact with spark plug.

3.Align holes in impeller hub with holes in impeller shaft and install two (2) new 1/4-20 x 1-5/8" capscrew/shear bolts. Install 1/4-20 locknuts and tighten securely.

CAUTION: Do not substitute. Use only original equipment capscrew/shear bolts as supplied with your snow thrower.

SNOW THROWER

TO ADJUST SNOW THROWER HEIGHT

See “TO ADJUST SKID PLATES” and “SCRAPER BAR” in the Operation section of this manual.

CHUTE DEFLECTOR

The chute deflector, attached to the top of the discharge chute, is provided to direct discharging snow away from the operator. If the deflector becomes damaged, it should be replaced.

WARNING: To avoid serious injury, never operate your snow thrower with the deflector removed or damaged.

•To change direction and/or distance snow is discharged, see “TO CONTROL SNOW DISCHARGE” in the Op- eration section of this manual.

SHEAR BOLTS (See Fig. 18)

AUGER SHEAR BOLTS

Both right and left-hand augers are secured to the auger shaft with a shear bolt and hex nut. Should a foreign ob- ject or ice become lodged in the augers, the shear bolts are designed to break, preventing damage to any other components. If one or both augers do not turn when auger control lever is engaged, check to see if one or both of the bolts have sheared. To replace the shear bolts:

1.Disengage all controls and move throttle control to STOP position. Wait for all moving parts to stop.

2.Remove safety ignition key and disconnect spark plug wire from spark plug. Place wire where it cannot come in contact with spark plug.

3.Align hole in auger hub with hole in auger shaft and install a new 1/4-20 x 2" shear bolt. Install 1/4-20 lock nut and tighten securely.

CAUTION: Do not substitute. Use only original equipment shear bolts as supplied with your snow thrower.

4.Insert safety ignition key and reconnect spark plug wire to spark plug.

IMPELLER SHEAR BOLTS

The impeller is secured to the impeller shaft with two (2) capscrew/shear bolts and hex nuts. Should a foreign object or ice become lodged in the impeller, the capscrews are designed to break, preventing damage to any other com- ponents. If impeller does not turn when auger control lever

is engaged, check to see if the capscrews have sheared. 15

4.Insert safety ignition key and reconnect spark plug wire to spark plug.

1/4-20

1/4-20 x 1-5/8

1/4-20 x 2

LOCKNUT

CAPSCREW /

SHOULDER /

 

SHEAR BOLT

SHEAR BOLT

 

IMPELLER HUB

 

 

IMPELLER

 

 

SHAFT

 

 

 

AUGER

 

 

HUB

1/4-20

AUGER HUB

 

LOCKNUT

AUGER SHAFT

FIG. 18

TO REMOVE BELT COVER (See Fig. 19)

1.Loosen the two (2) screws securing belt cover to frame.

2.Remove belt cover.

•Replace belt cover by installing cover and tightening screws.

 

BELT

 

COVER

FRAME

SCREWS

FIG. 19

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Contents MC12527ES Safe Operation Practices for Walk-Behind Snow Throwers Table of Contents Remove Snow Thrower from Carton Assembly / PRE-OPERATIONHOW to SET UP Your Snow Thrower Parts Packed Separately in CartonInstall Speed Control ROD See Figs Install Traction Drive Control ROD See FigsUnfold Upper Handle Install Auger Control ROD See Figs Install Discharge Chute / Chute Rotater Head See FigCheck Tire Pressure Ignition KEY OperationKnow Your Snow Thrower PrimerElectric start button used for starting the engine Meets A.N.S.I. Safety RequirementsTo USE Choke Control See Fig HOW to USE Your Snow ThrowerStopping To USE Fuel SHUT-OFF Valve See FigUsing the CLEAN-OUT Tool See Fig To Throw Snow See FigTo Move Forward and Backward See Fig Check Engine OIL Level See Fig To Adjust Skid Plates See FigBefore Starting the Engine Scraper BAR See FigIf Recoil Starter has Frozen Snow Throwing TipsTo Start Engine Before StoppingLubrication MaintenanceGeneral Recommendations Before Each USEEngine CleaningShear Bolts See Fig Service and AdjustmentsTo Adjust Snow Thrower Height Chute DeflectorTo Replace Belts See Fig Engine Speed To Adjust Cable Tension See FigTo Remove Wheels See Fig CarburetorEngine OIL StorageOther Fuel SystemTroubleshooting Exploded KEY Part Description Scraper BAR Auger 27 LHAuger 27 RH Carriage Bolt 5/16− POP Rivet 532 18 45-11 Deflector WeldmentStrap Knob BlackRotator Pivot Bracket 532 42 82-72 LEVER/CABLE Rotator AssemblyCable Assembly Adjustable Cable Assembly Heat Shield532 44 36-17 Pivot Support Weldment Repair Parts Snow Thrower - Model Number MC12527ES HandlesHandle Knob SpacerRetainer Knob RED532 18 77-16 Shifter ROD Bottom Impeller RODTraction ROD Shifter ROD TOP532 41 62-88 Interlock Spring BulbRepair Parts Snow Thrower - Model Number MC12527ES Drive END Plate Speed Selector AssemblyRetainer 532 40 26-89 Drive Plate Assembly Wheel HUBSprocket AssemblyAxle Shaft Roll PIN 3/16KEY Part Description 532 42 92-69 Engine Mounting Plate 532 42 86-85 Cover Assembly532 43 62-63 Complete LCT Engine FrameIdler Pulley 532 42 59-34 Pulley ENG Impeller Impeller BeltTraction Belt Idler ARM BracketWheel Assembly LH Repair Parts Snow Thrower - Model Number MC12527ES WheelsPower Cord KEY Part Description 532 44 30-59 Safety Ignition KEY KITWrench DECAL, CON LT WD/DEF 532 18 10-37 DECAL, Danger532 18 10-35 DECAL, DANGER, Deflector DECAL, CON RT SPD/LEV/PWSTService Notes Service Notes Limited Warranty

MC12527ES specifications

The McCulloch MC12527ES is a versatile and powerful chainsaw, designed for homeowners and professionals who require durability and efficiency for a variety of cutting tasks. This model is a perfect companion for pruning, cutting firewood, or even felling small trees.

One of the most notable features of the MC12527ES is its 27cc, 2-stroke engine. This engine delivers ample power for most cutting jobs while remaining lightweight and easy to handle. Its efficient engine design ensures that users can work longer without experiencing excessive fatigue, making it ideal for extended periods of use. Additionally, the chainsaw comes equipped with an easy-start system, which significantly reduces the effort required to start the motor. This feature is particularly useful for users who may struggle with traditional pull-start mechanisms.

The McCulloch MC12527ES also boasts a 12-inch bar and chain, which provides a perfect balance between cutting capacity and maneuverability. The length is suitable for a variety of tasks, allowing users to easily navigate through branches and limbs with precision. The chainsaw also features an automatic oil pump, which ensures that the chain remains well-lubricated during operation, promoting longer chain life and reducing wear and tear.

Safety is a priority in the design of the MC12527ES. The chainsaw includes a chain brake that instantly stops the chain in the event of kickback, protecting the user from potential injuries. This safety feature, along with an ergonomic handle, enhances user control and comfort during operation, making it an excellent choice for both beginners and experienced operators alike.

Another highlight of the McCulloch MC12527ES is its compact design. Weighing just around 10 pounds, this chainsaw is not only lightweight but also easy to transport and store. The saw features a tool-less chain tensioning system, allowing quick and easy adjustments on the go without the need for additional tools, which adds to its user-friendly nature.

Durable construction ensures that the MC12527ES can withstand the rigors of regular use. The high-quality materials used in its design mean that the chainsaw can handle tough cutting tasks without compromising performance. In essence, the McCulloch MC12527ES is a reliable and effective chainsaw that combines innovation, safety, and ease of use, making it a valuable investment for anyone looking to tackle outdoor cutting jobs with confidence.
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