089028RR

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Exam Number: 089028RR
Lesson Name: Servicing Garden Tractors
Question 1 of 20 : Select the best answer for the question.
1. In what two locations are the ground speed brakes typically found in a riding mower or garden tractor?
A. On the steering shaft, or at the end of the drag link
B. Under the clutch/brake pedal, or near the output shaft of the starter motor
C. At the end of the PTO clutch, or on a front wheel
D. On the output shaft of the transmission or transaxle, or near a rear wheel
Question 2 of 20 : Select the best answer for the question.
2. In a multicylinder garden tractor engine, a fuel shutoff solenoid stops the flow of fuel immediately after the ignition switch is turned off. This action helps to prevent
A. damage to the crankshaft.
B. the oil filter from becoming clogged.
C. afterburning.
D. fuel injection.
Question 3 of 20 : Select the best answer for the question.
3. In a garden tractor, which of the following devices provides the main structural support for the front wheels?
A. The front axle
B. The spindles
C. The kingpins
D. The sector gear
Question 4 of 20 : Select the best answer for the question.
4. When a riding mower contains a belt-driven mower deck, which of the following is often used to engage and disengage the blades?
A. Spring-loaded idler pulleys
B. A universal joint
C. A bevel gear
D. A PTO shaft
Question 5 of 20 : Select the best answer for the question.
5. If a garden tractor’s engine contains a pressurized oil system, the oil pump will usually be mounted on the
A. hydrostatic pump.
B. crankcase cover.
C. governor.
D. fuel tank.
Question 6 of 20 : Select the best answer for the question.
6. Improper tire inflation, unequal operator weight distribution in the seat, or improper blade leveling are all conditions that typically cause
A. swirling patterns in cut grass.
B. transmission gear slips.
C. ignition timing problems.
D. oil leaks from the crankshaft.
Question 7 of 20 : Select the best answer for the question.
7. In a riding mower or tractor, the main structural component that can be compared to the chassis of an automobile is the
A. deck.
B. wheel box.
C. frame.
D. blade housing.
Question 8 of 20 : Select the best answer for the question.
8. When referring to the steering system in a garden tractor or riding mower, what is another name for the wheel spindles?
A. The axles
B. The pinion gears
C. The kingpins
D. The tie rods
Question 9 of 20 : Select the best answer for the question.
9. A device that’s attached to a crankshaft journal to even out the motion of the piston and help the engine run smoothly is called
A. an armature.
B. a pinion gear.
C. a solenoid.
D. a balancer.
Question 10 of 20 : Select the best answer for the question.
10. On a garden tractor, the device that delivers engine power to accessory attachments (such as front-end loaders and snowblowers) is called the
A. hydrostatic pump.
B. power take-off shaft.
C. belt drive.
D. transmission.
Question 11 of 20 : Select the best answer for the question.
11. Which of the following on a garden tractor is designed to absorb bumps and prevent damage to lawns?
A. The tie rods
B. The deck
C. The pneumatic tires
D. The suspension system
Question 12 of 20 : Select the best answer for the question.
12. In a hydrostatic transmission system, the device that sends a continuous flow of fluid to the output motor is the
A. swash plate.
B. crankshaft.
C. charge pump relief valve.
D. hydrostatic pump.
Question 13 of 20 : Select the best answer for the question.
13. A safety system that stops the engine if the operator gets off the seat when the drive clutch or the PTO is engaged is called
A. a prevent start system.
B. a blade brake system.
C. an operator presence system.
D. a stop-engine system.
Question 14 of 20 : Select the best answer for the question.
14. In a belt-driven riding mower deck, what device is used to prevent a belt from dragging or coming off a pulley when the blades are disengaged?
A. The spindle
B. The belt guide
C. The belt housing
D. The idler pulley
Question 15 of 20 : Select the best answer for the question.
15. Which of the following clutches also acts as a transmission, providing various forward and reverse speeds?
A. Dry friction disc clutch
B. Belt-tensioning clutch
C. Friction disc/rubber wheel clutch
D. Wet friction disc clutch
Question 16 of 20 : Select the best answer for the question. 16. Which of the following components would be added to the ends of a drive shaft to make the shaft flexible and prevent it from being damaged?
A. Ball bearings
B. Bushings
C. Universal joints
D. Planetary gears
Question 17 of 20 : Select the best answer for the question.
17. If a garden tractor contains a wet clutch, what type of transmission will it contain?
A. A hydrostatic transmission
B. A friction disc/rubber wheel transmission
C. A sliding key transmission
D. A sliding gear transmission
Question 18 of 20 : Select the best answer for the question.
18. If the steering system in a riding mower or garden tractor “wanders” (doesn’t steer straight), which of the following is a likely cause of the condition?
A. A bent crankshaft
B. An improper toe-in adjustment
C. An unbalanced blade
D. Worn internal transmission gears
Question 19 of 20 : Select the best answer for the question.
19. How is the toe-in usually adjusted in a riding mower or tractor?
A. By moving the sector gear and the pinion gear
B. By adjusting the tire inflation
C. By lengthening the front axle
D. By adjusting the tie rods
Question 20 of 20 : Select the best answer for the question.
20. Which of the following statements about riding mowers and garden tractors is correct?
A. Riding mowers usually use air-cooled, single-cylinder, four-stroke engines with ratings of between 5 horsepower and 18 horsepower.
B. Garden tractors usually use water-cooled, two-stroke engines with ratings between 7 to 18 horsepower.
C. Some riding mowers contain multicylinder engines that have ratings of up to 22 hp.
D. Riding mowers most often contain single-cylinder engines with ratings between 16 horsepower and 24 horsepower.